A、Follow the way of stopping alcohol drinking. B、Change people’s attitudes towards smoking. C、Stop producing any kind of cigaret

W：If we can convince the next generation that smoking isn’t “cool”，eventually we might be able to eradicate smoking.
M：I suppose you’re right.You can pass all the laws you want but that doesn’t mean people will follow them.People’s attitudes need to change.
W：Exactly! In the 1920s they banned alcohol in America, but of course people didn’t stop drinking. Instead, lots of people got sick and even died from drinking industrial alcohol.
Question：What should be done to eradicate smoking according to the speakers？