Select the correct passive form of the given sentence.
The police arrested the thieves yesterday.

Options

A. The thieves were arrested yesterday by the police.
B. The thieves have been arrested yesterday by the police.
C. The thieves were being arrested yesterday by the police.
D. The thieves had been arrested yesterday by the p olice.

Explanation

(c) Patients were advised to try out a new medicine for migraine by Dr. Verma. (Correct) (a) The patients were being advised to try out a new medicine for migraine by Dr. Verma. (Tense has changed) (b) The old patients had been advised to try out a new medicine for migraine by Dr. Verma. (Tense has changed) (d) Patients have been advised to try out a new medicine for migraine by Dr. Verma. (Tense has changed)