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
Sensorineural deafness seen in -
(a) Alport's syndrome
(b) Pendred syndrome
(c) Treacher - Collins syndrome
(d) Crouzon's disease
(e) Michel’s aplasia 
Select and explain. 
A. abcd, B. bcda, C. abce, D. bcda
C: abce
Answer: C: abce 
Explanation: Causes of Congenital Deafness
Conductive hearing loss

Meatal atresia
Fixation of stapes footplate
Fixation of malleus head
Congential cholesteatoma
Ossicular discontinuity
Crouzons syndrome
Aperts syndrome.

Mnemonic
Sensorineural Hearing Loss