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.

When she does, she finds out that she doesn't have the same blood type as him, implying that he may not be her real, biological father. At dinner later on that night, Tammy and Kimberly have a vicious argument that leads to Tammy revealing that Kimberly is Byron's birth mother, having had him when _she_ was 13 years old. <sep>, Pronoun: she <sep>, A: Tammy <sep>, B: Kimberly
Output:
B