C) Assume that the market quantity demanded at a price of $10 is 2000 and the quantity demanded at a price of $8 is 2400, then a price-discriminating monopolist should engage in a _____________degree price di earn higher profit by_______________ A) first; charging all consumers, the higher price of $10 and selling 2000 units. B) third; charging all consumers $8 in order to increase quantity sold to 2400. C) perfect; selling 2000 units for $8 each, then selling an additional 400 units for $10 each. D) second; selling 2000 units for $10 each, then selling an additional 400 units for $8 each