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.

Sophie was born in D*sseldorf as the only daughter of Prince William of Saxe-Weimar-Eisenach and his wife Princess Gerta of Ysenburg and B*dingen in W*chtersbach. She was a great great granddaughter of Charles Augustus, Grand Duke of Saxe-Weimar-Eisenach, as well as a great granddaughter of William I of W*rttemberg. On _her_ mother's side, Sophie was a great granddaughter of Frederick William, Elector of Hesse's morganatic marriage to Gertrude Falkenstein, Princess of Hanau. <sep>, Pronoun: her <sep>, A: Sophie <sep>, B: Gertrude Falkenstein
A