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: Pathology
Preauricular pain, grating sensation and partial trismus are the symptoms of 
Select and explain. 
A. TMJ fibrous ankylosis, B. TMJ bony ankylosis, C. TMJ pain dysfurction symdnome, D. Ear infection
C: TMJ pain dysfurction symdnome
Answer: C: TMJ pain dysfurction symdnome 
Explanation: None