Which of the following is a normative economic​ statement?

A. With rising mortgage rates and rising unemployment​ rates, the number of unsold homes has increased.
B. Rising global demand for coal has led to increases in the price of coal.
C. The state of Texas is considering increasing funds for​ light-rail development to promote the use of public transportation.
D. Pharmaceutical manufacturers should not be allowed to patent their products so prescription drugs would be more affordable.