Assume that the company wanted to do some advertising in the states where the candidates were campaigning about the benefits of coal, but they were not of a political nature. Congress has taken a position against coal power plants and wants to not allow the ads. Which of the following is true about restrictions on commercial speech?
A. The restriction must not be more broad than is necessary to serve the substantial government interest.
B. All of these are correct.
C. The restriction must directly advance the substantial government interest.
D. The government interest that will be advanced by the restriction must be substantial.