U to C in AS level exam retake

Difficult to say really, as we don't know really anything about your circumstances. Were there any other factors that caused you to get a U in the initial exams? What sort of marks have you been getting in mock exams? To go from a U to a C is, in itself, a pretty decent jump so well done on that, but as to whether you can boost it to an A or a B, that really depends on a lot of other factors.

I would say the reason that may have happened was because of not doing I believe enough past papers or topic questions as for mock exams I can't really tell you about the mocks as we were not given our results and since I was retaking my AS level exam I didn't do any kind of mock exam I just did the exam with the information of what went wrong in my previous exam but unfortunately even that wasn't helpful. If you have any helpful tips that would be great.