Firm ABC is a monopolistic competitor that sells books. ABC collected the data below to determine the profit-maximizing price and quantity at which to sell. Looking at the data, what is the profit-maximizing price and quantity at which ABC should sell? ABC, Costs of Production Quantity Price Total Revenue Marginal Revenue Total Cost Marginal Cost 2 $21 $42 $21 $60 $30 4 $18 $72 $15 $64 $2 6 $16 $96 $12 $74 $4 8 $14 $112 $8 $88 $8 10 $12 $120 $4 $108 $10 12 $10 $120 $0 $132 $12 14 $8 $112 $4 $160 $14