All of the following statements about tobacco use are correct, except:
A) Nicotine is more addictive than heroin.
B) The overall proportion of smokers in the United States has declined somewhat during the last three decades; however, tobacco is responsible for about one in every five deaths in this country.
C) Environmental tobacco smoke is primarily harmful to young children and pregnant women.
D) Due to recent negative publicity about smoking, only one in every 25 U.S. adults over the age of 17 smokes.
