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: Following an unsuccessful application for the Chair of Mathematics at Aberystwyth in 1872, he taught at the Training College in Carmarthen. He finally secured the professorship at Aberystwyth in 1879, and held it until 1919. Along the way his title became Professor of Mathematics and Astronomy. Genese introduced into the United Kingdom the ideas of Hermann Grassmann (advancing the use of vector analysis). In _his_ 1941 book The calculus of extensions, Henry Forder published numerous examples in vector analysis taken from Genese's posthumous notes. <sep>, Pronoun: his <sep>, A: Genese <sep>, B: Hermann Grassmann
A:
Neither