The following table shows a monopolist's demand curve and cost information for the production of its good. What quantity will it produce and sell to maximize profits?

Quantity	Price per Unit	Total Cost
10	$14	$20
20	$12	$60
30	$10	$120
40	$8	$200
50	$6	$300
60	$2	$420

Overall, the Degree of Rivalry in the North American Pharmaceuticals Industry is strong. The MOST important driver of degree of rivalry is _______.

	A.	Low fixed costs.
	B.	Competitor size.
	C.	Similarity of players.
	D.	Number of players.
	E.	Low switching costs.