Thank god for that, I can aim to get a very high score on C3, which allows me to get a mark lower then 90% on C4, which looks really hard.
EDIT: I was gonna post a thread but I'll just say it one here.
Basically, Im considering swapping around my modules.
Currently in Maths I have 289/300 and in Further Maths I have 253/300. I wanna swap D1 from Further Maths with S1 from Maths, which will mean i have:
Maths- 271/300
Further Maths - 272/300
Swapping modules will allow me to get 70% minimum in Further maths modules to get an A.