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': 'ECG Change seen in Pulmonary embolism is: \nSelect and explain. \nA. S1 Q3 T3, B. S1 Q3 T1, C. S3 Q3 T1, D. S3 Q1 T3', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A large S wave in lead I, Q wave in lead II and inverted T wave in lead III is seen in Pulmonary embolism because of acute Right heart strain.', 'role': 'assistant'}]