From the diary of gustav kissel thursday, november 15, 1917 today has been one of my busiest. i’ve been up four different times and have done two hours 25 minutes flying altogether. i flew over to jan’s house and waved at her in her garden. i also practiced steep banks, zooms, spins, side-slips, stalling turns, and landing. in the afternoon i drilled my mechanics and also had to have one brought up before me for a calling down. he had refused to obey an order to sweep out a shed. i think i was just as frightened as he was. from diary of gustav hermann kissel via the veterans history project of the american folklife center, library of congress use the passage to answer the question. based on the diary entry, what was the writer’s least favorite part of being in the army air service? a. doing drills with the mechanics under his command b. disciplining men for refusing to obey orders c. practicing air maneuvers d. landing the airplane