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.
The two Prime Ministers are signing the accord.

A

The accord was being signed by the two Prime Ministers.

B

The accord is being signed by the two Prime Ministers.

C

The accord has been signed by the two Prime Ministers.

D

The accord had been signed by the two Prime Ministers.