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 wax "working bite" prior to functional appliance construction is made primary with the intention of \nSelect and explain. \nA. Providing a record of occlusion, B. Registering desired mandible position, C. To relax the jaw muscles, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Mechanism of action of working bite:\n\nDisplaces mandible from its rest position causing stretching of the muscles attached to mandible.\nThe reﬂex activity tends to restore mandible to a postural position that was determined by the\xa0unstretched muscles.\nMost construction or working bites are taken at a vertical dimension beyond freeway space. This\xa0increases vertical dimension and also displace the mandible in the sagittal and transverse planes.', 'role': 'assistant'}]