If the population increases, the market demand for most products will

Suppose that a per-unit subsidy is granted to each individual who consumes a product providing external benefits to society at large. Each individuals demand curve will shift ________, and the market demand curve for the product will shift ________

A) to the right; to the right B) to the right; to the left C) to the left; to the left D) to the left; to the right

If oranges were found to cure cancer,

A) the equilibrium price of apples would likely fall. B) the equilibrium price of oranges would likely increase in the near term. C) the equilibrium quantity of oranges would likely increase. D) All of the above.