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:He knew that his own life was unjust.

• A. It was known to him that his own life had been unjust.
• B. It was known by him that his own life was unjust.
• C. It was known to him that his own life was unjust.
• D. It was known by him that life was unjust.