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: ENT
Which of the following causes the opening of the eustachian tube 
Select and explain. 
A. Salpingopharyngeus, B. Levator veli palatini, C. Tensor veli palatini, D. None of the above
C: Tensor veli palatini
Answer: C: Tensor veli palatini 
Explanation: The medial fibres of tensor veli palatini are attached to the lateral lamina of the tube and when they contract they help to open the tube lumen. These fibres also called dilator tube muscles.