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.

Derek died from a heart attack during a road rage incident on Mavis's birthday in 1997. Derek Wilton was axed by producer Brian Park in a high-profile cull in 1997. His axing was said to have caused his co-worker Thelma Barlow (who played his on-screen wife Mavis) to quit _her_ role in the show. <sep>, Pronoun: her <sep>, A: Thelma Barlow <sep>, B: Mavis
Output:
A