Rewrite the sentence in passive voice."She bought four apples."
AFour apples were bought by her.
BFour apples are bought by her.
CFour apples were been bought by her.
DFour apples were being bought by her.
AFour apples were bought by her.
BFour apples are bought by her.
CFour apples were been bought by her.
DFour apples were being bought by her.