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 also published an edition of Ptolemy's Almagest. Heiberg was born in Denmark, the son of Johanne Henriette Jacoba (n*e Schmidt) and Emil Theodor Heiberg. Heiberg was Professor of Classical Philology at the University of Copenhagen from 1896 until 1924. Among _his_ more than 200 publications were editions of the works of Archimedes(1880 and 1912), Euclid (with Heinrich Menge) (1883--1916), Apollonius of Perga (1891--93), Serenus of Antinouplis (1896), Ptolemy (1898/1903), and Hero of Alexandria (1899). <sep>, Pronoun: his <sep>, A: Heiberg <sep>, B: Heinrich Menge
Output:
A