Direction: 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).
It was the mother of the girl `ul("of whose voice")` I had recognised.

Options

A. whose voice
B. the voice of who
C. voice whose
D. No improvement