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: Unknown
Light House sign is seen in: 
Select and explain. 
A. Acute Suppurative Otitis media, B. Otosclerosis, C. Acute mastoiditis, D. Meniere’s disease
A: Acute Suppurative Otitis media
Answer: A: Acute Suppurative Otitis media 
Explanation: Active pulsatile discharge seen on otoscopy showing intermittent reflection of light (comparable to Light House) in ASOM.