A Bertrand duopolists face a market demand curve given by P = 90 - Q where Q is total market demand. Each firm can produce output at a constant marginal cost of 30 per unit, the equilibrium price and quantity for the total market will be

Select one:

a.Q = 30, P = 60

b.Q = 40, P = 50

c.Q = 45, P = 45

d.Q = 60, P = 30