This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: obstetrics,pediatrics and geriatrics, Subject name: Social & Preventive Medicine
[{'content': 'According to WHO, exclusive breast milk is given upto - \nSelect and explain. \nA. 6 months, B. 4 months, C. 8 months, D. 10 months', 'role': 'user'}, {'content': "Answer: A \nExplanation: No other food is required to be given until 6 months after bih. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 489", 'role': 'assistant'}]