In the question given below, a part of the sentence is in bold and italicised. Below are given alternatives to the bold and italicised part which may improve the sentence. Choose the correct alternative. In case no improvement is needed, choose option 'D' as the answer.

Although India is still by far a poor country, it can become rich if its natural and human resources are fully utilised.

A.

few and far between

B.

by and large

C.

by and by

D.

No improvement

Correct answer is B

No explanation has been provided for this answer.