What is meant by the term "increasing returns to scale"?
◦ it has the same meaning as increasing costs of production
◦ output rises proportionately less than inputs, increasing per unit cost of production in the short run
◦ output rises proportionately more than inputs, resulting in increasing per unit costs
◦ output rises proportionately more than inputs, resulting in lower per unit costs in the long run
◦ it implies that the long-run average cost curve is shifting downward