Claudia and Hideki Are Math Students

Claudia and Hideki are math students.Claudia has a self-enhancement orientation,whereas Hideki has a self-improvement orientation.The best way to make them both continue to put in effort to learn math is to give

A) both students a very difficult math test that is rigged to make them do poorly.
B) both students a very easy math test that is rigged to make them do well.
C) Claudia a very easy math test so she is rigged to do well,but give Hideki a very difficult math test so he is rigged to do poorly.
D) Claudia a very difficult math test so she is rigged to do poorly,but give Hideki a very easy math test so he is rigged to do well.
E) both students a very easy math test,but do not tell them their scores.