Definition: 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.
Input: When Gao received this news, he became even more respectful of Liang. In the aftermaths of Emperor Zhuangzong's death, Emperor Zhuangzong's adoptive brother Li Siyuan claimed imperial title (as Emperor Mingzong). Meanwhile, Gao Jixing prepared his fleet and wanted to attack Chu. _His_ official Sun Guangxian, whom Liang Zhen had recommended to him to be his scribe, pointed out that Jingnan had barely recovered from the wars, and if it were engaged in a war with Chu, other states might take advantage and attack Jingnan. <sep>, Pronoun: His <sep>, A: Chu <sep>, B: Sun Guangxian

Neither