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: Medicine
[{'content': '60 yrs female came to casualty with fracture neck femur; she developed chest pain & breathlessness. What is the diagnosis \nSelect and explain. \nA. Myocardial infarction, B. Pulmonary Embolism, C. Angina, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]