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.
These things have been left here by an unknown customer.

Options

A. An unknown customer leaves these things here.
B. An unknown customer has left these things here.
C. An unknown customer have left these things here.
D. An unknown customer has been left these things here.

Answer

A, C