Suppose That Two Airlines Are Cournot Duopolists Serving the Peoria-Dubuque

Suppose that two airlines are Cournot duopolists serving the Peoria-Dubuque route, and the demand curve for tickets per day is Q = 220 - 2p (so p = 110 - Q/2) .Total costs of running a flight on this route are 1,400 + 20q, where q is the number of passengers on the flight.Each flight has a capacity of 80 passengers.In Cournot equilibrium, each duopolist will run one flight per day and will make a daily profit of

A) $400.
B) $800.
C) $220.
D) $700.
E) $3,000.