Please answer the following question: Hanriot HD.19 - The Hanriot HD.19 was a military trainer aircraft produced in France in the 1920s. Part of the family of designs that began with the HD.14 it was a two-bay biplane with unstaggered wings of equal span. The pilot and instructor sat in tandem open cockpits. While the HD.14 and most of its derivatives were powered by rotary or radial engines the HD.19 had a Hispano-Suiza Vee-8. 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:
Mean Of Transportation