Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer. If there is no error, the answer is 'E'. (Ignore the errors of punctuation, if any).
I asked him whom he thought would be able to get the first prize.
I asked him
whom he thought
would be able to
get the first prize.
No error
Correct answer is B
who he thought