Which Statement Implies That Smoking Does NOT Cause a Negative

Which statement implies that smoking does NOT cause a negative externality?

A) The health costs of the uninsured are passed on to others.
B) Secondhand smoke has serious effects not considered by smokers when they decide to smoke.
C) Fire damages nonsmokers' property and smokers are more likely to start fires.
D) Since smokers die early,they won't have high nursing home costs.