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.

We must take care of the old.

A

Those who are old need to be taken care of by us.

B

The old must be taken care of by us.

C

Those who are old need care by us.

D

The old should be taken care of by us.