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': 'Study the following table carefully and answer the questions -\n Disease\xa0\xa0Test ResultPresent\xa0Absent\xa0\xa0+ve40\xa0225\xa0-ve\xa010\xa0225\xa0The sensitivity of this study is - \nSelect and explain. \nA. 40, B. 20, C. 80, D. 50', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]