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: Pathology
[{'content': 'Most common age group affected with Infantile Colic is between \nSelect and explain. \nA. 0-3 months, B. 4-6 months, C. 7-9 months, D. 10-12 months', 'role': 'user'}, {'content': "Answer: A \nExplanation: Infantile colicRule of threeCrying > 3 hours/day---- > 3 days/week for > 3 weeks.Facial grimacing, drawing up of legs and passing flatus.An infant usually outgrows colic by 3 to 4 months of age(Refer: Nelson's Textbook of Paediatrics 19thedition, pg no: chapter - 11)", 'role': 'assistant'}]