C. Three

If the policy were based on health principles, then it would certainly include other behaviors, such as those related to obesity, which have large health care costs and which set a "bad example." It would certainly include alcohol use as well.

• I also lied to you when I told you that my own study demonstrated that electronic cigarettes are "a new route to smoking addiction for adolescents." The study was a cross-sectional one, so I could not draw that conclusion. And I admitted it in the article itself. But that's not what I told you.

"while we have heard from some former smokers who say e-cigarettes helped them quit, there is not yet any conclusive scientific evidence that e-cigarettes can work as a cessation aid."

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