The Prevailing View That Alcohol Abuse Usually Follows a Predictable

The prevailing view that alcohol abuse usually follows a predictable downward spiral was based on Jellinek's mid 20ᵗʰ century survey of Alcoholics Anonymous ( AA ) members that asked them how alcohol had affected them physically and psychologically.Data from this survey are now considered inaccurate because

A) respondents faked their answers to the questions on the survey.
B) too few AA members answered the survey questions.
C) since the survey was only sent to older members of AA, information on the progression of alcohol use was not available.
D) Jellinek himself became an alcoholic and never finished the research.