In each sector of a specic factors economy, protmaximizing employers will demand labor up to the point where O A. the value produced by an additional personhour equals the price of the product. O B. the marginal product of labor equals the wage rate. Q C. the price of the product equals the marginal product of labor times the wage rate. O D. the marginal product of labortimes the price of the product equals the wage rate. Movement of labor from a Foreign country to the domestic (Home) economy O A. leaves the marginal product of land unchanged in both countries. O B. occurs only if the marginal product of labor is higher in Foreign than at Home. O C. increases the marginal product of labor in Foreign. O D. increases the marginal product of labor at Home