Assuming that either supply or demand, but not both, shifts, ceteris paribus, indicate the direction and shift in either supply or demand that must have occurred to produce the results below.
a. An increase in the equilibrium price of bananas with a decrease in the quantity of bananas.
b. A decrease in the equilibrium price and quantity of cereal.
c. An increase in the equilibrium quantity and price of cars.
d. An increase in the equilibrium quantity of computers with a decrease in the price