Which answer corrects the shift in verb tense in the sentence?
For the upcoming bake sale at the fair, we baked the cake and frost it.
A.
For the upcoming bake sale at the fair, we bake the cake and frosted it.
B.
For the upcoming bake sale at the fair, we will have baked the cake and frost it.
C.
For the upcoming bake sale at the fair, we baked the cake and frosted it.
D.
For the upcoming bake sale at the fair, we baked the cake and had frosted it.