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 palatal bar is placed 
Select and explain. 
A. On the soft tissue, B. Placed on the hard palate entirely, C. At the junction of hard and soft palate, D. Should be kept 0.5-1 mm away from the mucosa
C: At the junction of hard and soft palate
Answer: C: At the junction of hard and soft palate 
Explanation: The posterior bar of an anteroposterior palatal bar major connector is half oval in shape and located as far posteriorly as possible, at the junction of hard and soft palate.
The anterior bar of an anteroposterior palatal bar major connector is a flat strap and is located as far posteriorly as possible to avoid rugae coverage and tongue interference.