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: Anatomy
[{'content': 'Motor nerve supply of muscles of upper lip is by \nSelect and explain. \nA. Temporal branch of facial nerve, B. Zygomatic branch of facial nerve, C. Buccal branch of facial nerve, D. Marginal mandibular branch of facial nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Temporal—frontalis, auricular muscles, orbicularis oculi\xa0\nZygomatic—Orbicularis oculi\xa0\nBuccal—muscles of the cheek and upper lip\xa0\nMarginal mandibular—muscles of lower lip.\xa0\nCervical—platysma', 'role': 'assistant'}]