How are games in game theory played? In game theory, O A. players determine their objectives and then payoffs are randomly assigned. O B. players employ strategies to attain their objectives sequentially so that they are not affected by the actions of other players O C. rules determine what actions are allowable, players employ strategies to attain their objectives, and payoffs are the results of the interaction among the players' strategies. O D. a natural experiment is used to determine the effect of a factor by treating a portion of participants, with remaining untreated participants becoming the control group. O E. agents determine their objectives, and principals are hired by contract to achieve those objectives