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': 'An increase in the action potential frequency in a sensory nerve signifies \nSelect and explain. \nA. An increase in the action potential conduction velocity, B. An increase in amplitude of stimulus, C. Increased intensity of stimulus, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ↑ intensity of stimulus can increase frequency of action potential, but has no effect an amplitude of action potential', 'role': 'assistant'}]