Question: A state is concerned with the increase in teenage use of alcohol. In an effort to decrease exposure to alcohol, which poses harmful health risk, the state legislature has enacted a statute to restrict various methods of advertising by alcohol manufacturers. One of the provisions of the law states that advertising of alcohol prices is not permitted except by placement of a sticker on the bottle or container. An alcohol company who was a major distributor of alcohol in the state, claims the advertising restriction violates its constitutional rights protected by the First and Fourteenth Amendments. If the alcohol company files suit challenging the validity of the state statute, the court should rule the statute
A: constitutional, because the state law is rationally related to the health and safety of the state's citizens. 
B: constitutional, because the restriction on commercial speech directly advances a substantial government interest. 
C: unconstitutional, because the regulation on commercial speech is not necessary to further an important government interest. 
D: unconstitutional, because the state could achieve its objective by a less restrictive means. 
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. First repeat the request without change, then give your answer.
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