-The Mobile-Phone Market Can Be Considered A(n) ________ Because ________

-The mobile-phone market can be considered a(n) ________ because ________.

A) oligopoly; there are few barriers to entry
B) monopoly; Apple makes the largest profit in the market
C) monopolistically competitive market; few firms make a profit and produce a variety of phones
D) monopolistically competitive market; the firms charge a markup over marginal cost
E) oligopoly; there are large profits for the firms that dominate the market