Andrea's Day Spa began to offer a relaxing aromatherapy treatment. The firm asks you how much to charge to maximize profits. The demand curve for the treatments is given by the first two columns in the following table; its total costs are given in the third column. Answer the following question accordingly. Price Quantity TC $25.00 $100 0 $24.00 10 $250 $23.00 20 $420 $22.00 30 $600 $21.00 40 $780 $20.00 50 $970 $19.00 60 $1,170 The profit maximizing price in the above table is: Select one: a. $21 b. $22 c. $25 O d. $24