This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Substance Related and Addictive Disorders, Subject name: Psychiatry
Type B alcohol dependence is associated with all except ? 
Select and explain. 
A. Severe dependence, B. Late onset, C. Many childhood risk factors, D. Polysubstance abuse
B: Late onset
Answer: B: Late onset 
Explanation: Alcohol dependence Type A Type B Late onset Early onset Few childhood risk factors Many childhood risk factors Mild dependence Severe dependence Few alcohol related problems Frequent polysubstance abuse