A price floor is?

(A) a maximum price usually set by government, that sellers may charge for a good or
service.
(B) a minimum price usually set by government, that sellers must charge for a good
or service.
(C) the difference between the initial equilibrium price and the equilibrium price after a
decrease in supply.
(D) the minimum price that consumers are willing to pay for a good or service.

What will happen to equilibrium price and quantity when both the demand and supply curves shift to the left?

(A) price falls unambiguously but the effect on quantity cannot be determined
(B) both price and quantity falls unambiguously
(C) quantity falls unambiguously but the effect on price cannot be determined
(D) the effect on both price and quantity cannot be determined

What will happen to equilibrium price and quantity when the demand curve shifts to the left and the supply curve shifts to the right?

(A) price falls unambiguously but the effect on quantity cannot be determined
(B) both price and quantity falls unambiguously
(C) quantity falls unambiguously but the effect on price cannot be determined
(D) the effect on both price and quantity cannot be determined

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