Consider a market in which four firms compete as quantity setters (i.e. firms are engaged in Cournot competition), and the market demand curve is given by Q = 9,000 - 10P. All firms have constant marginal cost equal to 40. In equilibrium, total quantity supplied and price are:

a) Q = 2150 and P = 80

b) Q = 1720 and P = 300

c) Q = 6880 and P = 212

d) Q = 2866.6 and P = 80