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 36 year old man shows positive Rinne test. His condition is: 
Select and explain. 
A. Wax in ear, B. Chronic suppurative otitis media, C. Otomycosis, D. Normal
D: Normal
Answer: D: Normal 
Explanation: The Rinne tuning fork test is sensitive in detecting conductive hearing losses. A Rinne test compares the ability to hear by air conduction with the ability to hear by bone conduction. Normally and in the presence of sensorineural hearing loss, a tone is heard louder by air conduction than by bone conduction. This is the positive Rinne test. A negative Rinne test indicates a minimum air-bone gap of 15-20 dB.