Which of the following statement is correct? a. Strategic situations are more likely to arise in monopolistically competitive markets than in oligopolistic markets. b. Game theory is used in understanding certain business decisions, but it is not really applicable to ordinary games such as chess or tic-tac-toe. c. Game theory is not necessarily for understanding competitive or monopoly markets. d. Strategic situations are more likely to arise when the number of decision makers is very large rather than very small.