In the following twenty two questions,a part of the sentence/sentence is underlined. Below are given alternatives to the underlined part which may improve the sentence. Choose the correct alternative. In case no improvement is required, choose "No improvement" option. Mark your answer in the Answer Sheet.
If the room had been brighter, I would have been able to read for a while before going to bed.

Options

A. had the room been brighter
B. No improvement
C. If the room was brighter
D. If the room are brighter

Explanation

Options (a) और (d) दोनों सही हैं।