According to Medical Research, Which Is True About Smoking

According to medical research, which is true about smoking?

A) Smokers experience less frequent minor illness.
B) Pregnant women who smoke decrease the likelihood of prenatal death.
C) Nonsmokers exposed to second-hand smoke have a lower risk of smoking-related diseases.
D) Smoking is psychologically but not physically addictive.
E) Pregnant women who smoke increase likelihood of low birth-weight babies.