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.

Eventually, Jacob Shaw fled to Pennsylvania in the United States, where his son Sebastian was born. In his old age, Jacob contracted an incurable blood disease due the alteration of his genetic code. He died just when Sebastian had obtained a scholarship to study engineering. Prior to _his_ death, Jacob gave his son a machine and told him to keep it with him. <sep>, Pronoun: his <sep>, A: Sebastian <sep>, B: Jacob
Output:
B