The very idea that one would extrapolate from a study finding that vaping, like smoking, reduces exhaled nitric oxide levels to the conclusion that smoking may be no more hazardous than vaping in terms of its acute pulmonary effects defies scientific logic. It also shows a misunderstanding, or at least a misinterpretation of the meaning of exhaled nitric oxide findings.

D. Two

There is little question that electronic cigarettes are much safer than tobacco cigarettes (even Glantz himself admits that). And further, there is little question that the most important piece of information consumers need in deciding whether to continue to smoke real cigarettes or switch to the fake ones is that the fake ones don't contain or burn tobacco and are therefore much safer than the real tobacco cigarettes.

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