According to the Research on Nicotine and Cigarette Smoking, Which

According to the research on nicotine and cigarette smoking, which of the following statements is FALSE?

A) Users of smokeless tobacco run a higher risk of developing oral cancer.
B) The health risks of smoking combine to reduce the life expectancy of the average smoker by 10 to 15 years.
C) In very large doses, nicotine may cause convulsions, respiratory failure, and death.
D) Smoking is the third leading cause of preventable death worldwide after obesity and alcoholism.