The tragedy of the commons is the tendency of a society to overuse and deplete open-access resources

Which of the following statements is correct?

A) The higher the price level, the larger is the quantity of real GDP demanded. B) An increase in exports shifts the aggregate demand curve leftward. C) A tax increase shifts the aggregate demand curve leftward. D) An increase in people's expected future income shifts the aggregate demand curve leftward. E) An increase in potential GDP shifts the aggregate demand curve rightward.

The income effect for an inferior good

A) is negative. B) is zero. C) is positive. D) could be negative, zero, or positive.