Suppose that 10 percent of a factory's workers unexpectedly take the day off. If the property of diminishing returns applies to all factors of production, the factory should experience _______. a. a decrease in the marginal productivity of the remaining workers and an increase in the marginal productivity of the factory's machines b. an increase in the marginal productivity of the remaining workers and a decrease in the marginal productivity of the factory's machines c. an increase in the marginal productivity of the remaining workers and an increase in the marginal productivity of the factory's machines d. a decrease in the marginal productivity of the remaining workers and a decrease in the marginal productivity of the factory's machines