Direction: The provided sentence is divided into four parts: A, B, C, and D. Select the part that contains an error as your answer. If the sentence is free of errors, choose E, which corresponds to 'No error'.

In India, our ancient legal systems were (A) so profoundly successful because there was (B) a clear indication of the end to be achieved, (C) as well as a underlying moral code. (D) No error (E)