A The sweater was Bought by cassie

B The students were put to sleep by boring teacher
C Moby was hit on the head by an anvil
D I consider myself a great student

Which of the following sentences is in the active voice?

A The sweater was Bought by cassie
B The students were put to sleep by boring teacher
C Moby was hit on the head by an anvil
D I consider myself a great student