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': 'The main site of absorption of ingested fluorides is \nSelect and explain. \nA. esophagus, B. stomach and small intestine, C. small and large intestine, D. large intestine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]