mate those questions are targetted towards band 6 students if your knowledge is not at a band 6 level for that part of the syllabus then you will not get that question even CSSA uses this on their marking guidelines
calling a question band 6 is reasonable as some questions are designed to target higher performance bands and need a higher level of knowledge or thinking to get full marks on
nah its not cherry picking they will never say no to you they will just put you in a shit class if Dr du puts you in A3 or B just leave its not worth it