Definition: 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.
Input: Derek saved her life, but was and still is angry with her. Amelia ended up sleeping with Derek's best friend Mark Sloan, following in the footsteps of her sister Nancy and her ex sister-in-law Addison Montgomery after making peace with Derek following _his_ own shooting. <sep>, Pronoun: his <sep>, A: Addison Montgomery <sep>, B: Derek
Output:
B