(Figure: Costs and Profits for Avocado Producers) Use Figure: Costs and Profits for Avocado Producers. The market for avocados is perfectly competitive. The market price of a bushel of avocados is $18, If the market price increases to $20, the farmer's marginal revenue and the profit-maximizing output Price per bushel Profit-maximizing $30 point 26 MC 22 MR - P = $18 ONGONO 1 2 3 4 5 6 Quantity of avocados (bushels) a, increases; increases O b. increases; decreases O c decreases; increases Od, decreases; decreases