What is TRUE of the aggregate supply curve in the classical model?

There is a technological advance in the production of ice cream. As a result, the supply curve of ice cream shifts ________ and ________

A) leftward; both the equilibrium price and equilibrium quantity fall B) rightward; both the equilibrium price and equilibrium quantity fall C) rightward; the equilibrium price falls while the equilibrium quantity increases D) rightward; both the equilibrium price and equilibrium quantity rise

Comparative advantage is the ability, compared with another producer

A) to produce more of a product with the same resources. B) to use fewer inputs to produce the same amount of a product. C) to produce a higher-quality product with fewer resources. D) to produce an additional unit of a product at lower opportunity cost.