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
Characteristic feature of Otosclerosis are all except- 
Select and explain. 
A. Conductive deafness, B. Positive rinne's test, C. Paracusis willisii, D. Mobile ear drum
B: Positive rinne's test
Answer: B: Positive rinne's test 
Explanation: You are aware of all options given in Question.
Just Remember: The following otoscopic findings in otosclerosis.
Remember:

Tympanic membrane is normal and mobile in 90% cases. (i.e. option d is correct).
Schwartz sign—Flammingo cases pink colour of tympanic membrane is seen in 10% cases. It indicates active focus with increased vascularity.
Stapes footplate—Shows a rice grain / biscuit type appearance
Blue mantles are seen histopathologically.