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': 'The use of the rubber dam is best indicated for \nSelect and explain. \nA. Adhesive procedures, B. Quadrant dentistry, C. Teeth with challenging preparations, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The advantages and benefits of rubber dam usage are reflected in all of the items stated. The rubber dam isolation increases access and visibility.', 'role': 'assistant'}]