Myself, my late granddad offered all his grandchildren something similar. Today the youngest of my cousins who was born when he was still alive gets to choose which way it would be for her. She opted for option B, almost every single one of my cousins took that option and most today has near nothing to show for it beyond part of it going towards a deposit for a house. Of the 22 of us, only 5 didn't opt for option B, 4 opted for option A 2 then switched to option B and a further 1 decided to wait for option C, one of those who opted for option B passed away 2 weeks after receiving his money as he bought a brand new BMW M3 with the money and he flipped it at high speed before slamming it into a tree.
I was that one who opted for option D, though one major difference was I opted not to take the monthly payments and instead left it to grow together so the payments at 18, 25 and 30 were much bigger. The money I took at 18 I bought a small car (an Austin Metro that was 10 years old and I used it to pay for a trip for my 18th birthday) The money I received at 25, I put all of it towards a house which my other granddad sold to me at a discount and another part of it I put it towards buying a farm in Sweden. The money I received at 30, I must say I was very tempted to buy a Ferrari 360 Modena. Why I didn't? Well I said I would buy one when the new model was released the F430 and there was this American woman who worked for a real estate developer, she was essentially trying her utmost best to "steal" me away from my ex-wife, therefore she lured me by offering some rather nice pieces of real estate I could buy, I bought 4 of them from her off-plan, it was ultra attractive because it was a pre-launch so I received a 20% discount and a further 5% discount she gave me through her employee discount. Best part, she even helped me secure and guarantee the mortgages on it and told me after it was completed I could sell it and buy a better Ferrari outright. After completion it went up 20% and after it was tenanted it went up a further 25% and when the developer launched the 2nd phase it went up a further 28% ...... those were the days when real estate in SE Asia as a whole was one turbo-charged bubble. I did sell all of it but somehow or rather I forgot about buying a Ferrari as had different priorities.
Looking at it now, I'm glad I'm one of those that took option D as the money came to me in the right amounts at the right time. I suppose I should thank that American woman for trying to make those moves on me. If I had opted for option C, I'm pretty sure that Ferrari dealership would had been my first stop and then it would had been the Maserati dealer.
My cousin that opted for option C, she bought herself a flat and 4 rental properties in Singapore. She never stopped working when she received the money, she still works as a kindergarten teacher.