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': 'When restoring a tooth with resin material, acid etching can do all of the following except \nSelect and explain. \nA. Increase the surface area, B. Permit chemical bonding between resin and enamel, C. Create surface irregularities in enamel for better mechanical retention of resin, D. Condition the tooth surface for better wetting', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]