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.)
Had+ would have is one of the if conditional forms and is used correctly. E is correct
Had+ would have is one of the if conditional forms and is used correctly. E is correct