Select the correct passive form of the given sentence.
We all regard Liza as an expert

Options

A. Liza is regarded as an expert by all of us
B. Liza has been regarded as an expert by all of us
C. Liza should be regarded as an expert by all of us
D. Liza was regarded as an expert by all of us

Explanation

(a) Liza is regarded as an expert by all of us. (Correct) (b))Liza has been regarded as an expert by all of us. (Tense has changed) (c)Liza should be regarded as an expert by all of us. (Incorrect helping verb) (d)Liza was regarded as an expert by all of us. (Tense has changed)