Some of the sentences are grammatically correct and some are incorrect. Find out which part of the sentence has an error and mark that part. If there is no error , mark that part as your answer.
`("Many a student")/a` `("has failed in the Mathematics test")/b` `("but Dilip has scored 100 per cent")/c` `("No error")/d`

Explanation

(c) Say .full marks.