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: Social & Preventive Medicine
[{'content': 'National deworming day is on \nSelect and explain. \nA. 10th Feb, B. 5th March, C. 22nd Feb, D. 12th November', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]