I'll go for B:
A - irrelevant, the argument discusses the smoking effects and ban.
B - right. The statistics the tabacco lobby cites only refers to healthy
nonsmokers. Very few people are healthy.
C - irrelevant, addresses only the heart disease but not lung cancer, and if it were relevant it would provide support for the lobbyists, notr criticicize them: "yeah guys what don't you eat healthy and exercise more instead of prohibiting peiple from smoking"
D - so what if they become concerned ? anyway they may or may not- that's a weak argument
E - it doesn't matter if they are healthier in general
because the ground for the ban are specific diseases and it's the evidence against those diseases that the lobbyists cite
"Amicus Plato, sed magic amica veritas"