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': 'Which one of the following is NOT true of Ameloblastoma - \nSelect and explain. \nA. Most common odontogenic tumour, B. Generally benign, C. Common in 3rd to 5th decade, D. Arises from mesenchymal tissue', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ameloblastoma\n\nAmeloblastoma is the most common benign odontogenic tumor.\nIt is benign but locally invasive.\nIt is common in the 3rd to 5th decades of life.\nPreferential sites are the mandible in the molar-ramus area and maxilla.\nThe tumor is epithelial in origin - arises from the dental epithelium of enamel.\nTumor with a histologic resemblance to ameloblastoma can occur occasionally in the long bone, like adamantinoma of the tibia.', 'role': 'assistant'}]