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).
He could succeed in catching the ball before it reaches the boundary line.
He could succeed
in catching the ball
before it reaches
the boundary line.
No error
Correct answer is C
before it reached