Q:M. E. Grant Duff - Sir Mountstuart Elphinstone Grant Duff GCSI CIE PC FRS (21 February 1829 12 January 1906) known as M. E. Grant Duff before 1887 and as Sir Mountstuart Grant Duff thereafter was a Scottish politician administrator and author. 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