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 was engaged in a series of amorous episodes with women in Nadezhda von Meck's large household, which caused her to become markedly cold towards him. He asked her for some financial assistance, but she refused. Tchaikovsky instead came to his aid, despite having been accused by Kotek of having revealed to her the true nature of their relationship. He had also contracted syphilis. After _his_ dismissal by Nadezhda von Meck, Kotek went to Berlin to study with Joseph Joachim. <sep>, Pronoun: his <sep>, A: Kotek <sep>, B: Joseph Joachim
Output:
A