Are the verb tenses in the sentence consistent, or do they shift unnecessarily?

Before he left, Jamie washed the dishes and cleans his room.

A.

The verb tenses are consistent.

B.

The verb tenses shift.

Analysis of the sentence:

There are three verbs in this sentence: left, washed, and cleans. You'll notice that left and washed are in the past tense. On the other hand, cleans is in the present tense. There is a sudden shift in verb tenses. Consistency of tenses is important in a sentence. Hence, instead of saying " Before he left, Jamie washed the dishes and cleans his room." one should say " Before he left, Jamie washed the dishes and cleaned his room. " instead.