In the following questions, 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.Question:The meeting has been called off by the chairman.

• A. The chairman called off the meeting.
• B. The chairman has called off the meeting.
• C. the chairman is calling off the meeting.
• D. The chairman had called off the meeting.