In a Competitive Market the Equilibrium Price Is Determined

In a competitive market the equilibrium price is determined:

A) at the intersection of the firm's demand and the market supply curves.
B) at the intersection of the market demand and supply curves.
C) at the intersection of the firm's demand and marginal cost curves.
D) so as to cover the costs of the potential firms.
E) so as to cover the costs of the firms currently in the industry.