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': "In a 60 year old adult, which of the following diseases cause expansile maxillary lesions? \nSelect and explain. \nA. Paget's disease, B. Acromegaly, C. Fibrous Dysplasia, D. Rickets", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]