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': 'Which of the following is a zone observed in hard palate \nSelect and explain. \nA. Fatty zone, B. Glandular zone, C. Gingival region, D. All of the following', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The following zones can be observed in hard palate \n\nGingival region, adjacent to the teeth.\nPalatine raphae, also known as median area, extending from the incisive papillae or palatine papillae posteriorly.\nAnterolateral area or fatty zone between the raphae and gingiva.\nPcsterolateral area or glandular zone between the raphae and gingiva.', 'role': 'assistant'}]