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': 'Vibrating line is on the: \nSelect and explain. \nA. Junction of the hard and soft palate., B. Hard palate., C. The soft palate and palatine muscles., D. Junction of muscularis uvulae.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The vibrating line marks the beginning of motion in soft palate, when the patient says ‘ah’ and it passes about 2 mm in front of fovea palatinae.\nThe vibrating line is always present on soft palate.', 'role': 'assistant'}]