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: Surgery
[{'content': 'Identity the true statement about Pulmonary embolism: \nSelect and explain. \nA. S1 Q3 T3 is the most common ECG finding seen, B. There will be Left axis deviation, C. D-dimer is the gold standard investigation, D. Sinus tachycardia is most common finding on ECG', 'role': 'user'}, {'content': 'Answer: D \nExplanation: S1 Q3 T3\xa0is highly predictive sign but not the most common ECG finding. And there will be right axis deviation.\nD-Dimer is best for screening not gold standard investigation.', 'role': 'assistant'}]