What happens the marginal cost of the firm if Smith is right?

Provide short answers to the questions. 1. Adam Smiths account of the division of labor says the average cost of production decline as output expands. Suppose Smith is talking about a firm. a. What happens the marginal cost of the firm if Smith is right? b. What happens to a competitive firm in such a case? 2. What if Smith is talking about an industry. What has to happen to allow the average cost for the industry to fall and competitive firms c to exist? 3. Alchian and Allen use average costs to talk about the profitability of a competitive firm. Show why we can simply use marginal costs. 4. In the class we suppose that people exist but the existence of a firm is contingent. Explain Armen A. Alchian, Universal Economics [2018]