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: Pediatrics
The following are characteristic of autism except - 
Select and explain. 
A. Onset after 6 years of age, B. Repetitive behaviour, C. Delayed language development, D. Severe deficit in social interaction
A: Onset after 6 years of age
Answer: A: Onset after 6 years of age 
Explanation: Ans. is 'a' i.e., Onset after 6 years of age