This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral Cavity, Subject name: Surgery
[{'content': 'The Nerve affected in Shoulder dysfunction Syndrome - A complication of Radical Node dissection is: \nSelect and explain. \nA. Vagus nerve, B. Accessory nerve, C. Hypoglossal Nerve, D. Phrenic Nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Accessory nerveRef: Bailey and Love Page 72Complications of RND:* Accessory nerve injury (Shoulder dysfunction syndrome)* Phrenic nerve injury* Thoracic duct injury* Cranial nerve injury* Carotid artery injury/Blow out* Soft tissue edema (usually after Bilateral RND)', 'role': 'assistant'}]