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: Other sources have explained Powell's injury differently; Miles Davis said Powell was beaten by a Savoy Ballroom bouncer after walking in the club without any money, while Dexter Gordon claimed he was beaten while in police custody after his arrest for drunk and disorderly conduct in a Philadelphia train station. Monk recorded ``In Walked Bud'' several times during his career, starting with the 1947 sessions later compiled for Genius of Modern Music (1951). According to music critic Robert Christgau, Monk's rendition of the song for _his_ 1958 live album Misterioso featured ``a long, laconically hilarious (and laconically, hilariously virtuosic) Johnny Griffin solo that's a landmark of saxophony''. <sep>, Pronoun: his <sep>, A: Robert Christgau <sep>, B: Monk
Solution:
B