You will be given a definition of a task first, then some input of the task.
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.

From 1958 to 1960 he served as a speechwriter and White House manager, after the departure of Sherman Adams and the death of John Foster Dulles. In 1960 he was publisher of Life magazine. Jackson became acquainted with Whittaker Chambers while at Time Inc. _He_developed a harsh opinion of Chambers as a psychopath. <sep>, Pronoun: He <sep>, A: Jackson <sep>, B: Whittaker Chambers
Output:
A