Suppose That the Demand in a Particular Industry Is Given

Multiple Choice

Suppose that the demand in a particular industry is given by Q^d = 100 - 2P.When the market price in the industry is $10 per unit,total demand in the industry is __ __.Furthermore,assume that each of the four largest firms in the industry sell 15 units.Based on this information,the four-firm concentration ratio is ____ .

A) 80 units; 1.00
B) 45 units; 0.75
C) 80 units; 0.75
D) 45 units; 0.25