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 pattern of enamel etching results in formation of honey comb appearance? \nSelect and explain. \nA. Type I, B. Type II, C. Type III, D. Type IV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 3 types of patten given in Sturdevant\xa0\xa0\n\nType 1\xa0- dissolution of prism core-HONEY COMB APPEARANCE.\xa0\xa0\nType II – dissolution of prism periphery COBBLESTONE APPEARANCE.\xa0\nType III\xa0- less distinct pattern, mixture of 1 and 2.\xa0\n\nSilverstone gave 5 types.\xa0\n\nType IV\xa0- pitted enamel as well as structures that look like unfinished puzzle,maps or network.\xa0\nType V\xa0- flat smooth surface.', 'role': 'assistant'}]