Changes in the output of a perfectly competitive firm, without any change in the price of the product, will change the firm's

Let's assume Ben can produce 3 units of a material good (M) or 3 units of a spiritual good (S) in a day, while Cal can produce 1 M or 2 Ss in a day. Both Ben and Cal can potentially produce a larger combination of M and S

A) if Ben specializes in S and Cal in M and they exchange with one another. B) if Ben specializes in M and Cal in S and they exchange with one another. C) if Ben specializes in both goods and doesn't exchange with Cal. D) only if Cal finds a way to also produce 3 M and 3 S per day.

If the demand for labor is plotted against the money wage, with the money wage on the vertical axis, then

a. an increase in the price level will cause the labor demand schedule to shift to the right. b. an increase in the money wage will cause the labor demand schedule to shift to the left. c. an increase in the money wage will cause the labor demand schedule to shift to the right. d. the labor demand schedule will be upward sloping.