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.

She once offered Piper some Blue Angels stickers if she could read all of the books that Ms. Mitchell assigned her, and Piper earned the stickers, but needed to read all of the books on a summer reading list Ms. Mitchell assigned her after Piper read all of the other books and earned the stickers. Ms. Gordon, Piper's schoolteacher, known for _her_ quavering eyebrow whenever she is near Piper. <sep>, Pronoun: her <sep>, A: Gordon <sep>, B: Piper
A