input: Text: Fight Clubbed Fight Club, a movie about a fictional organization of men who strip down and beat each other to pulp, has provoked more than its share of media hand-wringing, particularly diatribes about Hollywood's infatuation with violence and Faludi-esque ruminations about the emasculated American male. Fight Club, however, has not sparked an iota of interest in a real organization of men who strip down and beat each other to pulp: the Ultimate Fighting Championship. UFC's flameout from national sensation to total irrelevance is a tragedy of American sports, a cautionary tale of prudishness, heavy-handed politics, and cultural myopia. UFC began in 1993 as a locker-room fantasy. What would happen if a kickboxer fought a wrestler? A karate champion fought a sumo champion? Promoters built an octagonal chain-link cage, invited eight top martial artists, and set them loose in no-holds-barred, bare-knuckles fights. "There are no rules!" bragged an early press release. Contestants would fight till "knockout, submission, doctor's intervention, or death." UFC allowed, even promoted, all notions of bad sportsmanship: kicking a man when he's down, hitting him in the groin, choking. Four-hundred-pound men were sent into the Octagon to maul guys half their size. Only biting and eye-gouging were forbidden. The gimmick entranced thousands of people (well, men). What happens when a
  Question: How was the start of UFC a learning experience?
  
   (A) The fighters learned the hard way that not restricting to one combat type was too dangerous
   (B) It turned out that new types of combat sports are not favored on network TV, and there was not enough of a following for it to ever be popular
   (C) Assumptions about which fighting styles would be most beneficial in the real world were challenged
   (D) It turned out that the octagonal style of the ring was much harder to fight in than the square of a boxing ring
  Answer:
output: Assumptions about which fighting styles would be most beneficial in the real world were challenged