In the following question, the given sentence has four parts marked P, Q, R and S. Choose the part of sentence with the error and mark as your answer. If there is no error, mark 'No error (S) ' as your answer.
Can you tell me (P) / the name of the person (Q) / whom wrote the book? (R) / No error (S)

Correct option is C

Option (c) contains an error.
Explanation: The word "whom" is incorrectly used. "Who" should be used as it is the subject of the verb "wrote." "Whom" is used as an object, not a subject.
Grammatical rule used: Use "who" as the subject of a verb and "whom" as the object of a verb or preposition.
Example:
Incorrect: The person whom called you is here.
Correct: The person who called you is here.