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
In which of the following condition is Paracusis Willis seen? 
Select and explain. 
A. Otitis media, B. Otitis externa, C. Otosclerosis, D. Meniere's disease
C: Otosclerosis
Answer: C: Otosclerosis 
Explanation: Paracusis Willis refers to improved hearing with background noise. It is seen in patients with otosclerosis. Hearing deficit typically becomes apparent when they reach a 25 -30dB loss where the patient has difficulty understanding speech.