Given the task definition and input, reply with output. 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.

Janet McLuckie Brown was born in Rutherglen, Lanarkshire, and educated at Rutherglen Academy. Early in her performing career, she presented Picture Book on BBC Television in the 1950s. Beginning with Margaret Thatcher's election as the leader of the Conservative Party in 1975, Brown gained increasing prominence because of _her_ realistic impression of the Tory politician. <sep>, Pronoun: her <sep>, A: Margaret Thatcher <sep>, B: Brown
B