$D _ { M }$ Represents Market Demand $S _ { F }$

Multiple Choice

$D _ { M }$ represents market demand, $S _ { F }$ represents the fringe supply curve, $D _ { R }$ represents the dominant firm's residual demand curve, $M R _ { R }$ represents the dominant firm's marginal revenue curve, and $M C$ represents the dominant firm's marginal cost curve.


-Consider the information above. In equilibrium, how many units will the dominant firm supply?

A) 45 units
B) 60 units
C) 90 units
D) 135 units