Question

Which answer corrects the shift in verb tense in the sentence?

Before Sarah left for camp, she says good-bye to her friends.



A.
Before Sarah is leaving for camp, she says good-bye to her friends.


B.
Before Sarah leaves for camp, she had said good-bye to her friends.


C.
Before Sarah will leave for camp, she says good-bye to her friends.


D.
Before Sarah left for camp, she said good-bye to her friends.