Question

Game theory is necessary to understand which kinds of markets?

(i) perfectly competitive
(ii) monopolistically competitive
(iii) oligopoly
(iv) duopoly
(v) monopoly

a. (i) and (ii) only
b. (iii), (iv), and (v) only
c. (iii) and (iv) only
d. (i), (ii), (iii), (iv), and (v)