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: Dental
[{'content': 'Most of the nerve endings located among the odontoblasts are believed to be \nSelect and explain. \nA. Sensory receptors., B. Motor receptors, C. Mixed receptors, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]