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': 'Vaccine which can be stored at-10°C temperature- a)  Poliob)  Measles c)  BCGd)  DPT \nSelect and explain. \nA. c, B. ab, C. cd, D. b', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]