You will be given a definition of a task first, then some input 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.

Frost was a coach on the Australian national teams for the 1995, 1997 and 1999 Pan-Pacific Games; the 1998 Swimming World Championship and Commonwealth Games teams and the 2000 Sydney Olympic Games team. He has been a director at the Australian Swim Coaches Association since 1989 and at the Doug Frost Swim School since 1978. After Thorpe controversially changed coaches, Frost left the Sutherland club to start afresh in Southport, Queensland. In May 2005, _he_was appointed the head coach of the swimming program at the Australian Institute of Sport. <sep>, Pronoun: he <sep>, A: Thorpe <sep>, B: Frost
Output:
B