Q:Brian Birdwell - Brian D. Birdwell (born November 3 1961) is a Republican from Granbury Texas who represents District 22 in the Texas Senate. A retired lieutenant colonel in the United States Army Birdwell is a decorated survivor of the terrorist attack on the Pentagon in Arlington Virginia on September 11 2001. 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