The couple used to quarrel a lot with each other, however, now they（）well.

A. Assigning them tasks they have not dealt with before.
B. Assigning them missions which require inventiveness.
C. Giving them what they really deserve.
D. Giving them rewards they anticipate.

A. their academic performance will make the effect on their future careers
B. they are heavily involved in student affairs
C. they have to follow university discipline
D. they want to run for positions of authority