Read the sentence below to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. Choose the option with that part as your answer. If there is no error, choose 'D' as your answer. (Ignore the errors of punctuation, if any).

A lot of travel delay is caused due to the inefficiency and lack of good management on behalf of the railways.

A.

A lot of travel delay is caused

B.

due to the inefficiency and lack of good management

C.

on behalf of the railways.

D.

No error.

Correct answer is C

on the part of the railways.