This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
[{'content': 'Nerve commonly injured in classical radical neck neck dissection is? \nSelect and explain. \nA. Long thoracic nerve, B. Thoracodorsal nerve, C. Dorsal scapular nerve, D. Accessory Nerve', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The main disability that follows the Classical Radical Neck Dissection is weakness and drooping of the shoulder due to paralysis of the trapezius muscle as a consequence of excision of the accessory Nerve. Reference : Bailey & Love, 27th Edition, page no = 758.', 'role': 'assistant'}]