Will give out medals. Which answer corrects the shift in verb tense in the sentence?

The violinist listens carefully and imitated her teacher.

Question

Will give out medals. Which answer corrects the shift in verb tense in the sentence? 

The violinist listens carefully and imitated her teacher.

anonymous · Answer

A.
The violinist had listened carefully and imitates her teacher.
 
 B.
The violinist listened carefully and had imitated her teacher.
 
 C.
The violinist will listen carefully and imitates her teacher.
 
 D.
The violinist listened carefully and imitated her teacher.

anonymous · Answer

D, both past tense