Please answer the following question: Thomas Symons - Thomas Henry Bull Symons CC OOnt FRSC (born May 30 1929) is a Canadian professor and author in the field of Canadian studies.Born in Toronto Ontario he is the son of Harry Lutz Symons and Dorothy Sarah Bull and the brother of Scott Symons. He graduated from Upper Canada College in 1942 and attended the University of Toronto (B.A. 1951) Oxford (B.A. 1953 M.A. 1957) and Harvard University. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Office Holder