This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
As per DSM minimum period for which symptoms should be present before a diagnosis of schizophrenia can be made is 
Select and explain. 
A. 4 months, B. 1 month, C. 3 weeks, D. 6 months
D: 6 months
Answer: D: 6 months 
Explanation: 6 months in DSM 1 month in ICD