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.

He was also officially charged by Hassan II to prepare his visit to Washington D.C. from April 22nd to 27th, but was secretly told he had to conduct negotiations about secret US military bases in Morocco who pay a rent directly into the royal coffers . There, he also investigated why Pan American World Airways had decided against building an Intercontinental Hotel in Casablanca. In California, Medbouh discovered the reason : William P. Rogers, Secretary of State had received a file, from _his_ friend the president of the Pan American World Airways, containing photocopies of letters from Morocco. <sep>, Pronoun: his <sep>, A: Medbouh <sep>, B: William P
Output:
B