In the question given below, a part of the 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 needed, option (No improvement) is the answer.
Hoping not to be disturbed, I sat down in my easy chair to read the book I won as a prize.
I had won as a prize
I have won as prize
I had to win as a prize
Hoping not to be disturbed, I sat down in my easy chair to read the book I had won as a prize