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
A patient has bilateral conductive deafness, tinnitus with positive family history. The diagnosis is - 
Select and explain. 
A. Otospongiosis, B. Tympanosclerosis, C. Meniere's disease, D. B/L otitis media
A: Otospongiosis
Answer: A: Otospongiosis 
Explanation: Conductive deafness means the disease process leading to deafness is limited to external ear tympanic membrane, middle ear including the footplate of stapes.
Bilateral conductive deafness rules out meniere’s disease (as it presents with SNHL).
Amongst the remaining three options, positive family history is seen mainly in case of otosclerosis (Otospongiosis), so it is our answer.
Ref. Dhingra 6/e, p 30, 87