Change of Voice - Verbal and Reasoning

Directions to SolveIn the questions below the sentences have been given in Active/Passive voice. From the given alternatives, choose the one which best expresses the given sentence in Passive/Active voice.
Q1:

The invigilator was reading out the instructions.

A The instructions were read by the invigilator.

B The instructions were being read out by the invigilator.

C The instructions had been read out by the invigilator.

D The instructions had been read by the invigilator.

ANS:B - The instructions were being read out by the invigilator.

No answer description is available.