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': 'Intensity of sensory stimulation is directly related to- \nSelect and explain. \nA. Duration of action potential (AP), B. Frequency of action potential, C. Amplitude of action potential, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Number of receptor stimulated and frequency of action potential generated can control the intensity of a stimulus.', 'role': 'assistant'}]