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': 'Great auricular nerve originates from? \nSelect and explain. \nA. C2,C3, B. C3,C4, C. C4,C5, D. C5,C6', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The great auricular nerve is a superficial branch of the cervical plexus composed of branches of spinal C2 and C3. It provides sensory innervation to the skin overlying the parotid gland, angle of mandible, external ear and posterior auricular region. The skin of the face is supplied by three divisions of the trigeminal nerve except for the small area over the angle of mandible and parotid gland which is supplied by greater auricular nerve(C2,C3).', 'role': 'assistant'}]