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: His father, Eduard Avenarius, a publisher from Leipzig, founded a joint subsidiary company with the Brockhaus publishing house. His mother, C*cilie n*e Geyer, was a daughter of the actor and painter Ludwig Geyer. Eduard Avenarius represented the company in Paris, where he consorted with Heinrich Heine and Richard Wagner, the latter being the stepuncle of Ferdinand Avenarius and _his_ brother, the philosopher Richard Avenarius. <sep>, Pronoun: his <sep>, A: Richard Wagner <sep>, B: Ferdinand Avenarius
Output:
B