Ossicular disruption with intact tympanic membrane

Which of the following conditions causes the maximum hearing loss?

**A.	Ossicular disruption with intact tympanic membrane**
B.	Disruption of malleus and incus as well tympanic membrane
C.	Partial fixation of the stapes footplate
D.	Ottitis media with effusion

explanation

Ossicular disruption with intact tympanic membrane causes an average hearing loss of 54 dB.