Read the following implied thesis statement: Legalizing recreational marijuana will not encourage teen-agers to use the drug.
Which choice below is the most effective supporting topic sentence for a paragraph in this essay?

A) There is no evidence that marijuana is a so-called “gateway drug” that leads teenagers to experiment with harder drugs or alcohol.
B) Marijuana is easy to access and many teenagers have tried it.
C) A recent study found that over that last decade, pot-smoking by teens has fallen to an all-time low, even as more and more states have legalized marijuana.
D) A CDC report states that 82% of American teens say they have been offered marijuana or other drugs.