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': 'Non-caloric sweetener is: \nSelect and explain. \nA. Xylitol., B. Saccharin., C. Sorbitol., D. None.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Caloric sweeteners \n• Xylitol\n• Lactitol\n• Sorbitol\n• Lycasin\nNon calorie sweeteners \n• Saccharin\n• Asparatame (Nutra sweetner)', 'role': 'assistant'}]