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
Vibrating line is on the: 
Select and explain. 
A. Junction of the hard and soft palate., B. Hard palate., C. The soft palate and palatine muscles., D. Junction of muscularis uvulae.
C: The soft palate and palatine muscles.
Answer: C: The soft palate and palatine muscles. 
Explanation: 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.
The vibrating line is always present on soft palate.