So I did AS Maths this year with Edexcel as my exam board. I did it a year early (so I'm going into year 12 now) and I want to know what I could do to bump my low B to an A? I got 82 UMS in C1, 73 for C2 and 60 for D1 and I want to do medicine in uni. What is required for an A and should I retake just D1 or retake D1 and C2?