Use the following cost table to answer the next question.OutputAverage Variable CostAverage Total CostMarginal Cost0---2$2.50$27.50$2.542.0014.501.562.0010.332.082.138.382.5102.307.303.0122.506.673.5143.006.576.0164.007.1311.0The table shows cost data for a perfectly competitive firm. If the market price for the firm's product is $6, what output level will the firm produce to maximize profits?

The cost to a firm of producing one more unit of output

A) usually exceeds the firm's price. B) is significantly less than the firm's price for purely competitive firms operating in long-run equilibrium. C) usually equals the firm's price for monopolistically competitive firms. D) is the firm's marginal cost.

Which of the following would shift the supply of Florida Oranges to the left?

a. a hurricane in Florida destroying a major part of the crop b. an increase in the price of water per unit, a major input, used to irrigate the orange trees c. one of the orange grooves shuts down d. all of the above