This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable Diseases, Subject name: Social & Preventive Medicine
[{'content': 'Control of TB and leprosy is by:(1994) \nSelect and explain. \nA. Isolation of cases, B. Specific protection, C. Early diagnosis and treatment, D. Elimination of reservoirs', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: cRef: Park, 17th ed, p. 97 & 18th ed, p. 101', 'role': 'assistant'}]