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.

Let me give you an example: He grew up in Evanston, Illinois the second oldest of five children including his brothers, Fred and Gordon and sisters, Marge (Peppy) and Marilyn. His high school days were spent at New Trier High School in Winnetka, Illinois. MacKenzie studied with Bernard Leach from 1949 to 1952. _His_ simple, wheel-thrown functional pottery is heavily influenced by the oriental aesthetic of Shoji Hamada and Kanjiro Kawai. <sep>, Pronoun: His <sep>, A: MacKenzie <sep>, B: Bernard Leach
The answer to this example can be: A
Here is why: Based on the text, his refers to MacKenzie so option A is correct.

OK. solve this:
He drew obsessively from childhood obsessed, both from his own imagination and by copying images that particularly pleased him. 1913 after his return from Ascona, he attended painting school in Munich for a total of eight days. But doubt in his ability was so strong that he hid his work from all but _his_ friend, the writer Oskar Maria Graf (as Schrimpf former baker). <sep>, Pronoun: his <sep>, A: Oskar Maria Graf <sep>, B: Schrimpf
Answer:
Neither