Which one of the following is not grammatically correct?

A I shook him by the hand

B I have a piece of business

C Whole Bangladesh mourned his death

D He is a perfect administrator

Correct Answer: Option C

c)দুটি ভুল আছে । The whole of হবে এবং mourned for হবে ।mourn for/over-শোক করা সকলে প্রত্যেকে অর্থে the whole of sth ব্যবহৃত হয় ।