In the question given below, a part of the sentence is in bold and italicised. Below are given alternatives to the bold and italicised part which may improve the sentence. Choose the correct alternative. In case no improvement is needed, choose option 'D' as the answer.
I would have waited for you at the station if I knew that you would come.
had known
was knowing
have known
No improvement
Correct answer is A
No explanation has been provided for this answer.