This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'In acute pulmonary embolism, the ECG finding may include all except \nSelect and explain. \nA. S1Q3T3 pattern, B. P. pulmonale, C. Sinus tachycardia, D. T-wave inversion in leads V1 to V4', 'role': 'user'}, {'content': "Answer: C \nExplanation: The most frequently cited abnormality, in addition to sinus tachycardia, is the S1Q3T3 sign: an S wave in lead I, a Q wave in lead III, and an inveed T wave in lead III. This finding is relatively specific but insensitive. RV strain and ischemia cause the most common abnormality, T-wave inversion in leads V1 to V4.Ref: Harrison's 19e pg: 1633", 'role': 'assistant'}]