Which of the following institutional practices was identified by Oldman as contributing to regular roulette players’ belief in the “skill-based” nature of the game, in the casino where he was a participant-observer?
A. Offering deep discounts for repeated play
B. Refusing service to patrons with expertise in decision theory
C. Switching croupiers away from losing tables
D. Ensuring that all casino workers believed the game to be skill-based
E. Only opening the casino on certain evenings