A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to "No improvement".

He is one of those who likes to help others.

A

those persons who like to help others

B

those who like to help the other

C

those who like to help others

D

No improvement