In Problem 5, Suppose That Grinch and Grubb Go into the Wine

In Problem 5, suppose that Grinch and Grubb go into the wine business in a small country where wine is difficult to grow. The demand for wine is given by p = $420 - .2Q, where p is the price and Q is the total quantity sold. The industry consists of just the two Cournot duopolists, Grinch and Grubb. Imports are prohibited. Grinch has constant marginal costs of $60 and Grubb has marginal costs of $30. How much Grinch's output in equilibrium?

A) 275
B) 550
C) 825
D) 1,100
E) 1,650