This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
All of the following suggests of organic disease except : 
Select and explain. 
A. Early age onset, B. Absence of family history of psychiatric illness, C. Absence of previous history of psychiatric illness, D. Absence of any apparent psychological precipitant
A: Early age onset
Answer: A: Early age onset 
Explanation: Organic disease are usually seen at older age groups.