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: Shi Chaoyi agreed to take action, and Luo persuaded Shi Siming's guard commander General Cao (personal name lost to history) to agree with the plot. That night, Luo led 300 soldiers and ambushed Shi Siming, binding _him_ and then beginning a return to Luoyang with the troops. <sep>, Pronoun: him <sep>, A: Luo <sep>, B: Shi Siming

B