In these questions a sentence/part of the sentence is in bracket. Below are given alternative to in Bracket sentence/part of the sentence at (a), (b), and (c) which may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (d):Question :(I wish I knew what is wrong with my car )

• A. I wish I had known what is wrong with my car
• B. I wish I know what is wrong with my car
• C. I wish I knew what was wrong with my car
• D. No improvement