which of the following is an example of a price floor? a. rent controls b. restricting…

which of the following is an example of a price floor?
a. rent controls
b. restricting gasoline prices to $1.00 per gallon when the
equilibrium price is $1.50 per gallon.
c. the minimum wage
d. all of the above are price floors.
e. none of the above are price floors.