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Use the information given in the table to calculate the marginal cost of the third unit of output. Enter your answer exactly; do not round. Output Total cost Marginal cost 0 $20 N/A $35 $15 2 $45 $10 3 $65 4 $90 $25 marginal cost of the third unit of output: $Each graph illustrates three short run cost curves for firms, where ATC is average total cost (aka average cost), MC is marginal cost, and AVC is average variable cost. Which graph correctly represents the relationship between all three cost curves? OD. O c. Cost Cost MC MC ATC ATC AVC AVC Output Output