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': 'Removing level I to V lymphnode along with removal of sternoclenoid muscle is called as \nSelect and explain. \nA. Selective neck dissection, B. Modified radical neck dissection, C. Radical neck dissection, D. Functional neck dissection', 'role': 'user'}, {'content': 'Answer: B \nExplanation: MRND is Removing level I to V lymphnode along with saving any of the three structres (Spinal accessory nerve , IJV and sternocleidomastoid muscle).', 'role': 'assistant'}]