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
Complication of Rheumatoid arthritis of condyle is 
Select and explain. 
A. Fibrous ankylosis, B. Subluxation, C. Dislocation, D. None of above
A: Fibrous ankylosis
Answer: A: Fibrous ankylosis 
Explanation: None