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': 'Reverse bevels are given: \nSelect and explain. \nA. To facilitate easy withdrawal of wax pattern, B. For purpose of aesthetics, C. To counteract oblique forces, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]