What does the author describe in the first section of this text?
A. a movie where an umpire is yelled at by baseball fans who think he made a bad call
during a game
B. a possible situation in which a robot umpire would need the help of a human to make a call in a baseball game
C. the different players on one famous baseball team, and whether they liked robot umpires or not
D. a situation where a human umpire made a bad call that affected the outcome of a baseball game