Detailed 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.
Q: The increasing influence of politically appointed ``special advisers'' in government departments can reduce the political neutrality of public administration. In Thatcher's government, Alan Walters was an official adviser from 1981 to 1984, and again in 1989. Walters' criticisms ``of many aspects of Treasury policy, particularly in relation to exchange rate policy'' and Thatcher's refusal to dismiss _him_ led to Nigel Lawson's resignation as chancellor in 1989. <sep>, Pronoun: him <sep>, A: Walters <sep>, B: Thatcher
A:
A