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
Posterior vibrating line is located at : 
Select and explain. 
A. Soft palate., B. Junction of Hard and soft palate., C. Hard Palate., D. Hamular notch.
A: Soft palate.
Answer: A: Soft palate. 
Explanation: None