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': 'In interview, first stage is to \nSelect and explain. \nA. Establish contact, B. Starting interview, C. Establishing rapport, D. Probe questions', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]