Instructions: 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: The fact Benton is a warrant officer, having been promoted in the first Fourth Doctor serial, Robot, places it after that serial, but presumably prior to his departure from UNIT in the late 1970s as revealed in the serial Mawdryn Undead. In September 2015, the film was released on DVD On his way to UNIT HQ in order to deliver some radioactive materials, Warrant Officer John Benton has an unexpected flashback to his childhood in Lancashire. After visiting the grave of _his_ older brother Chris, Benton has a further flashback to his childhood in 1944. <sep>, Pronoun: his <sep>, A: Chris <sep>, B: Benton
Output:
B