This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Rinne test is positive in: 
Select and explain. 
A. CSOM, B. Normal individual, C. Otomycosis, D. Wax in ear
B: Normal individual
Answer: B: Normal individual 
Explanation: (b) Normal individual(Ref. Shambaugh, 6th ed., 181)Rinne is said to be positive when AC > BC.In normal ear air conduction is more than the bone conduction due to the transformer action of the middle ear.All the other options are conductive deafness conditions so BC > AC, i.e. Rinne will be negative.