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.

During the next few years, he was involved in commanding forces in repelling invasions by Shu's commander of the armed forces, Jiang Wei. In 254, while Sima Zhao was at the capital Luoyang, advisors to the Wei emperor Cao Fang suggested that the emperor surprise Sima Zhao and kill _him_ to seize his troops, and then use those troops against Sima Shi. <sep>, Pronoun: him <sep>, A: Wei <sep>, B: Cao Fang
Neither