Which of the following statements regarding tobacco smoking and lung damage is true?
A) Cancer rates are the same for smokers and non-smokers.
B) Anaplasia is reversible if a person stops smoking.
C) Twenty-five percent of lung cancers are the direct result of cigarette smoking.
D) Neoplasia is not reversible, even if the person stops smoking, but can be treated by surgery.
E) The incidence of lung cancer is greater among women than men.
Answer: D
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