Given the task definition and input, reply with output. 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.

Rajkumar plays Dr Murthy, surgeon, who is also a Singer by hobby. On a visit to Ernakulam for a medical conference, Murthy's father advises him to stay at Retd Major subbanna's Balakrishna house, who is old-friend. Due to a mishap by _his_ assistant, Murthy has to act as compounder and his assistant has to act as Doctor. <sep>, Pronoun: his <sep>, A: Balakrishna <sep>, B: Murthy
B