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

Options

A. By whom Nagasaki have been destroyed?
B. By whom has Nagasaki been destroyed?
C. By whom Nagasaki had been destroyed?
D. By whom Nagasaki has been destroyed?

Answer

B