Read each sentence to find out whether there is any 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 errors of punctuation, if any.)
(A) You may not know it. (B) but this engine is/(C) claimed to have twice/(D) as powerful as the previous one./(E) No error.
In option C, claimed to have is wrong. The correct phrase should be claimed to be twice. C is the right answer.
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