Suppose That the Demand for a Monopolist's Product Is Estimated

Multiple Choice

Suppose that the demand for a monopolist's product is estimated to be Q^d = 100 − 2P and its total costs are C(Q) = 10Q.Under first-degree price discrimination,the optimal price(s) ,number of total units exchanged,profit,and consumer surplus are:

A) P = $30; Q = 40,  = $800; CS = $400.
B) 10  P  100; Q = 80;  = $1,600; CS = $1,600.
C) 10  P  50; Q = 80,  = $1,600; CS = $0.
D) P = $30; Q = 40,  = $600; CS = $0.