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: Pathology
[{'content': 'A disease which only affects the formation and eruption of tooth but does not cause hypoplasia is: \nSelect and explain. \nA. Hypoparathyroidism, B. Hyperthyroidism, C. Rickets, D. Syphilis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]