For example, Stan Glantz argued against electronic cigarettes in a Scientific American , claiming that: "We’ve found very high levels of dual use [traditional cigarettes along with e-cigarette use]. Very few people have switched away from cigarettes or managed to use them as a bridge to eventually go off cigarettes."

The answer, sadly, is D - ban vape shops which sell cigarettes to zero youth in Daly City. Moreover, youths are not even allowed in these vape shops and it would be quite easy to adopt rules to ensure that youths do not have access to these stores.

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