Select the Fallacy or Bad Argument Technique Which Occurs in the Following

Multiple Choice

Select the fallacy or bad argument technique which occurs in the following argument: These herbal infusions of marijuana ought to be banned! Kids start on these legal highs, but they soon switch to illegal drugs like marijuana, and from there it's a short step to serious drugs like ecstasy and cocaine. And before you know it, they're all P addicts.

A) Confusing correlation with cause
B) Slippery slope
C) Common practice fallacy
D) Straw man