Bob's Section of Psychology Has Two Exams (A Mid-Term and a Final)

Bob's section of Psychology has two exams (a mid-term and a final) . Susan's section of Psychology has 5 exams (one every three weeks) . Susan is resentful, because she would rather cram right before a mid-term and final exam than have to keep up and study more often. All else being equal, you know that

A) Bob will do better because he can process the information better over a longer interval between exams
B) Bob will do better, because he gets more practice at cramming efficiently
C) Susan will know more material after the course ends because of studying repeatedly over time
D) Susan will do better because her attitude toward the class will motivate her to study