Instructions: 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: He was requested to investigate and report upon the system of instruction at the military schools of England, France, Germany, and Austria, and to attend and report upon the maneuvers of the 17th Corps of the French army in 1884. Lieut. Wisser was aide-de-camp to Gen. John Gibbon during the Chinese troubles in Washington territory in 1886, but in August of that year _he_returned to the U. S. Military Academy. <sep>, Pronoun: he <sep>, A: Wisser <sep>, B: John Gibbon
Output:
A