Instructions: 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.
Input: Over the years, she provided him with specimens collected in Cornwall as well as those from abroad that came into Britain through Falmouth. She is credited (as ''Miss Warren'') as one of 19 plant specimen collectors to whom Hooker is particularly indebted in the preface to his 1841 Manual of the British Algae. In _his_ history of British seaweeds, Phycologia Britannica, Hooker lists an algae named after her by the botanist Robert Caspary, Schizosiphon Warreniae (now Rivularia biasolettiana). <sep>, Pronoun: his <sep>, A: Hooker <sep>, B: Robert Caspary
Output:
A