If the quantity demanded is infinitely responsive to any change in price, the demand curve is:

Gruel is an inferior good. Hence, a decrease in people's incomes

A) shifts the supply curve of gruel leftward. B) decreases the quantity of gruel supplied. C) shifts the demand curve for gruel rightward. D) shifts the demand curve for gruel leftward.

Aggregate demand increases if the quantity of money ________

A) decreases or tax rates increase B) or transfer payments decrease C) remains constant or tax rates increase D) increases or tax rates decrease