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': 'Calculate the median from the following values 1.9,1.9, 1.9, 2.1, 2.4, 2.5, 2.5, 2.9 - \nSelect and explain. \nA. 1.2, B. 1.9, C. 2.25, D. 2.5', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]