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.

In spite of this, ``Sullivan took (Wright) under his wing and gave him great design responsibility.'' As an act of respect, Wright would later refer to Sullivan as Lieber Meister (German for ``Dear Master''). He also formed a bond with office foreman Paul Mueller. Wright would later engage Mueller to build several of _his_ public and commercial buildings between 1903 and 1923. <sep>, Pronoun: his <sep>, A: Wright <sep>, B: Mueller
Output:
A