Open market purchases raise the ________ thereby raising the ________

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.

Which of the following will not cause a change in the demand for a product?

a. a change in consumer income b. a change in consumer preferences c. a change in the price of the product d. a change in the price of a substitute product