Read the sentence below to find out if 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 (5). (Ignore errors in punctuation if any).

While the strategic larger (A)/aim of the Chinese in upping the ante(B)/ by violating decades ­old (C)/understandings in 2020 is still a matter of debate.(D)/ No error(E)