This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Cluster testing is used in the detection of- \nSelect and explain. \nA. STD, B. Diabetes, C. Measles, D. Cancer', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .Cluster testing is used in the detection of of STD S.here the patients are asked to name other persons of either sex ho move in the same socio-sexual environment.these persons are then screened .this technique ha been shown almost to double the number of cases found ref:park&;s textbook,ed22,pg no 312', 'role': 'assistant'}]