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': 'Approximately what gauge wax relief should be provided, prior to duplication of master cast, beneath frame work extension on to ridge areas for attachment of resin bases. \nSelect and explain. \nA. 22 gauge, B. 20 gauge, C. 10 gauge, D. 28 gauge', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]