Researchers Did Not Conduct Surveys of Drug Use During the 1960s,but

Multiple Choice

Researchers did not conduct surveys of drug use during the 1960s,but today,they feel that they have a fairly accurate idea of use during that decade because they draw inferences from:

A) tax revenues
B) media reports
C) DAWN's ED/ME reports
D) ADAM-II's arrest reports
E) retrospective estimates based on a survey conducted in the 1970s