This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Psychiatry
[{'content': 'Which of the following nerve stimulation may be considered for treatment of ADHD? \nSelect and explain. \nA. Vagal Nerve, B. Facial Nerve, C. Trigeminal Nerve, D. Trochlear Nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. Trigeminal nerveExternal Trigeminal Nerve Stimulation (eTNS) System is indicated for patients ages 7 to 12 years old who are not currently taking prescription ADHD medication and is the first non-drug treatment for ADHD granted marketing authorization by the FDA.', 'role': 'assistant'}]