What is marginal cost (MC) equal to at the best possible rate of output? $ Is average total cost (ATC) above, below, or equal to price, p1? above Identify if the following would raise, lower, or not change the market price. A reduction in all firms' output would increase the market price. An increase in input costs for all firms would increase the market price. Exit of firms from the industry would increase the market price. An improvement in technology to grow catfish would decrease the market price. What price would prevail in long-run equilibrium? $