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 30 year old lady do sudden onset breathlessness, anxiety, palpitation & feeling of impending doom. Physical examination is normal. What is the diagnosis - \nSelect and explain. \nA. Panic attack, B. Anxiety disorder, C. Conversion disorder, D. Acute psychosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Sudden onset of breathlessness, anxiety, palpitation and feeling of impending doom suggest the diagnosis of panic attack (severe anxiety)', 'role': 'assistant'}]