The slope of the immediate-short-run aggregate supply curve is based on the assumption that:

As described in the text, which of the following statements best describes the strategy of many potato growers since 2005?

A) Growers have worked together to reduce supply and stabilize demand. As a result, equilibrium price has been propped up and allowed farmers to earn what they consider a decent profit. B) Growers have continued to compete vigorously with each other, causing prices and profits to decrease. C) Growers have restricted supply so much that there is now a severe shortage of potatoes in the United States. D) because efforts by potato growers to restrict supply are illegal in the United States, they have focused exclusively on increasing demand to increase their profits.

The law of diminishing marginal returns says that

a. total product will eventually remain constant as more of an input is added to production b. total revenue decreases as output increases, holding technology fixed c. marginal product eventually falls as more of an input is employed d. the quantity demanded of a good decreases as its price rises e. utility falls as more of a good is consumed