Directions: The following sentence tests your ability to recognise grammar and usage errors. The sentence contains either a single error or no error at all. The error, if there is one, is in underlined and lettered part. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct and mark it as your answer. If the sentence is correct, select choice (E) as your answer. In choosing your answer, follow the requirements of standard written English.

The land was (A) clearly their’s, (B) frequently their title was (C) legally certified by a treaty negotiated (D) with the federal government. (E) No error