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: Psychiatry
[{'content': 'A person has poor performance in front of his seniors in public place, has tachycardia when he has to deliver a lecture, avoids going to parties. The diagnosis is - \nSelect and explain. \nA. Panic disorder, B. Schizophrenia, C. Social phobia, D. Avoidant personality', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]