Based on the article, which of these is true about mascots?
A. Mascots got their start as costumed characters on minor-league baseball teams.
B. Mascots got their start speeding into stadiums on motorcycles in the 1970s.
C. Mascots came from a popular French opera about a farmer's bad luck.
D. Mascots came from a New York Mets game in the 1960s.