Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
He grew up in Evanston, Illinois the second oldest of five children including his brothers, Fred and Gordon and sisters, Marge (Peppy) and Marilyn. His high school days were spent at New Trier High School in Winnetka, Illinois. MacKenzie studied with Bernard Leach from 1949 to 1952. _His_ simple, wheel-thrown functional pottery is heavily influenced by the oriental aesthetic of Shoji Hamada and Kanjiro Kawai. <sep>, Pronoun: His <sep>, A: MacKenzie <sep>, B: Bernard Leach
Solution: A
Reason: Based on the text, his refers to MacKenzie so option A is correct.

Now, solve this instance: 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
Student:
B