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: Physiology
[{'content': 'Stimulating mechanoreceptors or nociceptors in mouth triggers the \nSelect and explain. \nA. Jaw opening reflex, B. Jaw clenching reflex, C. Jaw gnashing reflex, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]