为自己加油

What is the purpose of giving the students a follow-up test?（ ）

A.
To prove the dishonesty of the “cheater” group students in the first test.
B.
To find whether the cheaters felt guilty of their behavior on the first test.
C.
To check how the “cheater” group students evaluate their own intelligence.
D.
To see whether the students could give better answers to the similar questions.