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': 'Muscle not cut in posterolateral thoracotomy is -a) Serratus anteriorb) Latissimus dorsic) Rhomboides majord) Pectoralis major \nSelect and explain. \nA. cd, B. bc, C. bd, D. ac', 'role': 'user'}, {'content': 'Answer: A \nExplanation: • Posterolateral thoracotomy is the most frequently used operation to access the thorax.\n• Incision is made through 5th intercostal space.', 'role': 'assistant'}]