This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Subject name: Anatomy
[{'content': 'Skin over parotid is supplied by: \nSelect and explain. \nA. Retroauricular nerve, B. Greater auricular nerve, C. Greater occipital nerve, D. Facial nerve', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. B Greater auricular nerveRef: Gray's Clinical Neuroanatomy E-book, P 315", 'role': 'assistant'}]