This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'Which of the following causes opening of eustachian tube \nSelect and explain. \nA. Salpingopharyngeus, B. Levator veli palatine, C. Tensor veli palatine, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The medial fibres of tensor veli palatine 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. Reference: Dhingra 6th edition.', 'role': 'assistant'}]