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.

These have the effect of not only altering his character (for the worse) but also of changing his gender, transforming him into a beautiful but evil woman. To explain the sudden appearance of his female half around the house, he calls himself Mrs. Hyde, saying she is Jekyll's widowed sister. Dr. Jekyll soon falls in love with Susan Spencer, the upstairs tenant, but Sister Hyde develops a lust for _her_ brother. <sep>, Pronoun: her <sep>, A: Susan Spencer <sep>, B: Hyde
Output:
A