I'm studying Dr Faustus for Section A/B, and I went to see Ibsen's 'An Enemy of the People' for C.
I find sections A/B more difficult, C seems very straightforward once you get the hang of it.
For C you take the stimulus statement and decide on your standpoint, then look at an aspect of the play you saw with regards to the statement, and assess how it proves your standpoint, then compare that to how it would have been / the style that was normal to audiences at the time of the original play.