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
In otosclerosis, tinnitus is due to - 
Select and explain. 
A. Cochlear otosclerosis, B. Increased vascularity in lesion, C. Conductive deafness, D. All
A: Cochlear otosclerosis
Answer: A: Cochlear otosclerosis 
Explanation: None