This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Child Psychiatry, Subject name: Psychiatry
According to DSM 5 criteria, all are true about ADHD except: 
Select and explain. 
A. Adult ADHD symptoms are similar to children, B. For diagnoses, symptoms should be present before 7 years, C. For diagnoses, symptoms should be present before 12 years, D. Symptoms should be present in more than one setting
B: For diagnoses, symptoms should be present before 7 years
Answer: B: For diagnoses, symptoms should be present before 7 years 
Explanation: According to DSM-5 symptoms should be present before 12 yrs of age to make a diagnosis of ADHD.