He is a mason who built my house.
...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 is a mason who built my house.
He is
a mason
who
built my house.
No error
Correct answer is B
the mason
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