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': 'Causative agent is present but there is no transmission is known as \nSelect and explain. \nA. Elimination, B. Control, C. Eradication, D. Holoendemic', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]