The Belief That Tobacco Is a "Gateway Drug" Is Consistent

Multiple Choice

The belief that tobacco is a "gateway drug" is consistent with

A) the idea that tobacco and marijuana are substitutes.
B) the idea that an increase in income causes a decrease in the demand for tobacco and an increase in the demand for marijuana.
C) the idea that lower cigarette prices are associated with less use of marijuana.
D) most of the available evidence.