Hi, I did A-Level Maths in 2018 (AS in 2017 and A2 in 2018). I did AS in 2017 (2008 spec) which includes C1 (6663), C2 (6664) and S1 (6683). I did A2 in 2018 (2008 spec) which includes C3 (6665), C4 (6666) and S2 (6684). I want to know if I can retake A2 Maths of the 2008 spec (or the new spec) in 2020, and if so will it be valid to replace my current grade in A2 Maths (assuming it's better than the previous one) and add to my AS Maths grade to get a better grade overall in A-Level Maths in 2020.
If what I mentioned above is possible to do, is it also possible to retake individual*papers in A2 (C3, C4 or S2) in which I didn't perform well enough, so that they will replace the previous grades of those papers (assuming it's better) to get a better overall A2 grade, and will that mean It'll add to my AS Maths grade to get a better grade for the whole A-Level Maths.*
Thanks for replying.