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.

He then became a pupil of Darius Milhaud at Mills College. Hoiby became influenced by a variety of composers, particularly personalities in the twentieth century avant garde, including the Pro Arte String Quartet led by Rudolf Kolisch, brother-in-law of Arnold Schoenberg. During _his_ youth, Hoiby played with Harry Partch's Dadaist ensembles. <sep>, Pronoun: his <sep>, A: Arnold Schoenberg <sep>, B: Hoiby
Output:
B