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': 'True about dystrophic calcification is: \nSelect and explain. \nA. This is the most frequent type of pathologic calcification., B. In the mouth, areas of dystrophic calcification may frequently  be found in the gingiva, tongue or cheek., C. One of the most common intraoral  dystrophic calcifications is found in the pulp of teeth., D. All of the above.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In the mouth, areas of dystrophic calcification may frequently\xa0be found in the gingiva, tongue or cheek. Such areas are also\xa0found in the benign fibromas of the mouth and adjacent\xa0structures. One of the most common intraoral\xa0dystrophic calcifications are found in the pulp of teeth.', 'role': 'assistant'}]