Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
The agreement ended six-month negotiation. It was signed yesterday.
A. The agreement which ends six-month negotiation was signed yesterday.
B. The agreement which was signed yesterday lasted six months.
C. The negotiation which lasted six months was signed yesterday.
D. The agreement which was signed yesterday ended six-month negotiation.