Read the sentence to find out whether there is any error in it or not. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is no error, the answer is (5). Ignore errors of punctuation, if any.

I think we should hire a porter (A) Your suitcase is too heavy (B) None of my arms is strong enough to (C) lift that and travel all the way back home.(D) No error.