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': 'Transient bells palsy during mandibular nerve block after injection of local anesthesia occurs due to needle piercing into \nSelect and explain. \nA. Maxillary artery, B. Buccinator muscle, C. Temporalis muscle, D. Parotid gland', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]