A Cournot Oligopoly Has 19 Firms, and Inverse Market Demand $M C = \$ 20$

A Cournot oligopoly has 19 firms, and inverse market demand P = 60 - Q. All firms have marginal cost, $M C = \$ 20$ . The equilibrium price in this market will be

A) $20.50
B) $22
C) $33.33
D) $40.15