The correct option is A Lung and oral cancer are more common among smokers than non-smokers
A statutory warning won’t serve the purpose. Instead of working to encourage the quitting the habit, efforts must be made to discourage the youth from picking up the habit.
Picking up a habit is easy but abstaining from a habit a difficult task and requires a lot of control and commitment, that's just how the human psychology works. No one picks up on smoking because of the effect that it has, majority of the amateurs don’t actually know its effect or why people smoke.
So, the correct option is "A" (Lung and oral cancer are more common among smokers than non-smokers).