Select the option that expresses the given sentence in passive voice.
The scholar of the department could help the junior students in the proposed coaching.

A

The junior students could be helped by the scholar of the department in the proposed coaching.

B

The junior students could have been helped by the scholar of the department in the proposed coaching.

C

The junior students could have helped by the scholar of the department in the proposed coaching.

D

The junior students can help by the scholar of the department in the proposed coaching.