-The Figure Above Shows the Market Demand Curve and the ATC

Multiple Choice

-The figure above shows the market demand curve and the ATC curve for a firm.If all firms in the market have the same ATC curve,the lowest price at which a firm could stay in business in the long run is ________ per unit and the quantity demanded in the market at that price is ________ units per hour.

A) $20; 4,000
B) $10; 8,000
C) $10; 4,000
D) $20; 2,000
E) $20; 8,000