Read the sentence given below to find out if it contains any error. The error, if any, will be in one part of the sentence. If the sentence is error free, select No error or option 5. Ignore error of punctuation if any.

The remains of a Roman settlement believed (A)/ to be the first of its kind discovered (B)/ in Britain have uncovered near the (C)/ North Yorkshire seaside town. (D)/ No error (E)