In the following questions, a part of the sentence is given in bold. Below are given alternatives to the bold part at (1), (2) and (3) which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (4).
You won't tell them what has happened, wouldn't you ?

Options

A. won't you ?
B. isn't it ?
C. will you ?
D. No Improvement

Answer

C

Explanation

(3) Negative Sentence rarr Positive Tag
Tag Structure rarr First Auxiliary (will)
Hence, will you is the right usage.