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.
Q: He first performed with the MythBusters on Good Morning America, shattering a wine glass with the aid of an amplifier when his opponent could not shatter the glass. During the filming of MythBusters, Vendera's voice was measured at 117 dB at 48``, translating into 120 dB at one meter as recorded by Dr. Roger Schwenke of Meyer Sound Laboratories. Since _his_ MythBusters appearances, Vendera has performed on other US shows such as ''I've Got a Secret``, ''Timewarp`` and the ''Sonic1 Toothbrush`` infomercial. <sep>, Pronoun: his <sep>, A: Vendera <sep>, B: Roger Schwenke
A:
A