Which of the following is a normative economic statement?
A.
The increase in the price of beef is the result of supply disruptions and strong demand.
B.
When the price of beef rises, the demand for beef substitutes increase.
C.
When the average price of a new car increases, then the demand for used cars increases.
D.
Since the price of rent is too expensive for low income households, the government should impose price ceilings on rents.