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
A 38-year-old gentleman reports of decreased hearing in the right ear for the last 2 years. On testing with a 512-Hz tuning fork, the Rinne's test (without masking) is negative on the right ear and positive on the left ear. With the Weber's test the tone is perceived louder in the left ear. The patient most likely has: 
Select and explain. 
A. Right conductive hearing loss, B. Right sensorineural hearing loss, C. Left sensorineural hearing loss, D. Left conductive hearing loss
B: Right sensorineural hearing loss
Answer: B: Right sensorineural hearing loss 
Explanation: Negative Rinne on the right means bone conduction better than air conduction, meaning thereby conductive deafness. But this test has been done without masking the left ear which is normal in this case. Response to bone conduction could be from the left ear. Thus right ear suffers from sensorineural deafness. Rinne's test in this case is "false negative".