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 child has adenoidectomy done but he has effusion in the middle ear. What is done next 
Select and explain. 
A. Grommet inseion, B. Mastoidectomy, C. Tympanoplasty, D. Tonsillectomy
A: Grommet inseion
Answer: A: Grommet inseion 
Explanation: Effusion in the middle ear(serous otitis media)treated with myringotomy and aspiration of fluid and grommet inseion to provide continued aeration of the middle ear. Ref: Textbook of diseases of ENT, PL Dhingra, 7th edition, pg no. 70