Refer to the figure above. Which of the following combinations is attainable as well as efficient?

____________ were the most common form of specie used in the colonies

a. Coins issued by the English mint b. Coins issued by the Spanish mint c. Coins issued by New England's mint d. Coins issued by privately-owned colonial mints

When quantity demanded decreases in response to a change in price:

a. the demand curve shifts to the right b. the demand curve shifts to the left. c. there is a movement down along the demand curve. d. there is a movement up along the demand curve.