also, getting full marks in section A is essential to getting an A, as they are easy marks in the grand scheme of things, especially the state questions and the calculation questions. including the first question from section b, there is 22 marks up for grabs. to get an A on this paper requires a minimum of 58 marks, and if you get all of section A plus the calculation question right, that is 22 marks right there, so 22/58 x 100= 38% of the marks already gained to getting an A. that means you only need 36 marks throughout the rest of the paper to secure the A, and you have ample oppurtunity to do this from the remaining 68 marks. 36/68 x 100= 53%. so provided you answer the evaluation questions to a half decent standard, you need just over half marks from question 2B onwards to get the A.
this is working of last years grade boundaries anyway