Definition: In this task, you will be presented with a text, a pronoun from the text, and two candidate names. You should determine what the pronoun refers to and classify the answers into A, B, or Neither. A and B here are referring to option A and option B. Position of the pronoun in the text is showed within two "_"s.
Input: All the evidence suggests that Niall remained in Robert's warband for the years to come, fighting both the English-side generally and the MacDougalls in the west of Scotland. Niall even acted as a representative of Robert in negotiations with the English crown, on two occasions, in 1309 and 1314. As a reward for _his_ loyal services to King Robert, Niall received his sister, Mary Bruce, in marriage. <sep>, Pronoun: his <sep>, A: King Robert <sep>, B: Niall
Output:
B