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
Cart Wheel sign is seen in: 
Select and explain. 
A. ASOM, B. Glomus, C. OME, D. CSOM
A: ASOM
Answer: A: ASOM 
Explanation: (a) ASOM(Ref. Hazarika, 3rd ed., 149)In Glomus "rising sun sign" or "red reflex" is seen.In Otitis media with effusion (OME) TM appears dull, retracted and sometimes bluish.In CSOM the TM will be perforated