6. A firm's fixed costs for 0 units of output and its average total cost of producing different output levels are summarized in the following table. Complete the table to find the fixed cost, variable cost, total cost, average fixed cost, average variable cost, and marginal cost at all relevant levels of output. (LO5, LO6) FC VC TC AFC AVC ATC MC 0 $15,000 100 300 200 200 300 175 400 225 500 325 600 4008. Explain the difference between fixed costs, sunk costs, and variable costs. Provide an example that illustrates that these costs are, in general, different. (LO4)