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
A year old child presents with bilateral hearing difficulty. Impedance audiometry shows type B Curve. There is bilateral conductive hearing deficit. There is no sign of infection. Next step is ? 
Select and explain. 
A. Wait and watch, B. Grommet, C. Myringotomy and aspiration, D. Canal wall down procedure
A: Wait and watch
Answer: A: Wait and watch 
Explanation: Ans. is'a'i.e., wait and watch [Ref: Dhingra 5th/e p. 72; ENT in primary care p/e p. 611The diagnosis is of serous otitis media.It is the most common cause of hearing loss in school children.Unless there is a sign of an infection, most health care providers will not treat SoM at first. rnstead, they will recheck the problem in 2-3 months.