Is it true that if you are invited to an interview, adcoms will ask why you did poorly on some classes (C or lower)? How do you describe it if you don't have an "excuse"? I got a C in chem 2 because it was a really challenging course at my school and the averages on exams were always low. Does this mean I should try to retake chem 2 so I don't get stuck in the position of them asking this question? (although if I retake it with our chem professor I don't even know if I can get that much better of a grade)