
Passage: Wang Gang: It is confirmed that more than 80% of heroin users have a history of smoking marijuana. Such data seem to suggest that marijuana use will definitely lead to heroin use. Li Yan: Maybe marijuana use does lead to heroin use, but citing the statistics you mentioned to prove this is absurd, because 100% of heroin users have a history of drinking water.
Question: In response to Wang Gang's argument, which of the following argumentation techniques did Li Yan use?
A. A.To provide an example showing that nothing that induces heroin use is unsafe.
B. B.Question the practice of establishing causality based solely on statistics.
C. C.Provide evidence that the statistics Wang Gang used to support his conclusions were inaccurate.
D. D.Show that Wang Gang's argument is flawed by showing that it will lead to a clearly false conclusion.
Answer: