If in Problem 4, the Inverse Demand for Bean Sprouts

If in Problem 4, the inverse demand for bean sprouts were given by P(Y) = 550 - 3Y and the total cost of producing Y units for any firm were TC(Y) = 10Y and if the industry consisted of two Cournot duopolists, then in equilibrium each firm's production would be

A) 90 units.
B) 30 units.
C) 60 units.
D) 45 units.
E) 45.83 units.