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: Astin subsequently adopted Sean. In 1973, Duke gave birth to Astin's brother, Mackenzie Astin, who also became an actor. Duke and John Astin divorced in 1985. Duke married Mike Pearce in 1986, and they adopted a son, Kevin, in 1989. When _he_was 14, Duke told Astin that Arnaz was his father, and the two developed a relationship. <sep>, Pronoun: he <sep>, A: Duke <sep>, B: Astin
A:
A