In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one, which best expresses the same sentence in Passive/Active voice.
Who ate the last pastry?

A

The last pastry was eaten by whom?

B

The last pastry was eaten by who?

C

The last pastry had been eaten by who?

D

The last pastry has been eaten by whom?