A rational decision maker takes an action only if the a. marginal benefit is greater than both the average cost and the marginal cost. b. marginal benefit is greater than the marginal cost. c. marginal benefit is less than the marginal cost. d. average benefit is greater than the average cost.

a. marginal benefit is greater than both the average cost and the marginal cost.

Explanation:

Marginal cost is the cost of any action taken and average cost is the average of all the costs associated with the action under consideration. Marginal benefit is the benefit of each action undertaken. A rational approach is to take an action when marginal cost and average cost will be lower than the marginal benefit. You should consider the net Marginal benefit of an action before taking decision.

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