You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

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
Why? Based on the text, his refers to MacKenzie so option A is correct.

New input: He was raised by his great-grandmother until he was 11, when he was placed in a foster home in Kansas City, Missouri. He was soon running with the wrong crowd, and at the age of 13 was threatened with a four-year stretch in reform school for buying alcohol under-age. However, the headmaster of _his_ high school, Hugh Oliver Cook, knew that Leonard was being habitually assaulted by the guardian of the foster home, and offered to adopt him if he were not jailed. <sep>, Pronoun: his <sep>, A: Hugh Oliver Cook <sep>, B: Leonard
Solution:
B