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 child presents with ear infection with foul smelling discharge. On fuher exploration, a small perforation is found in the pars flaccida of the tympanic membrance. Most appropriate next step in the management would be: 
Select and explain. 
A. Topical antibiotics and decongestants for 4 weeks, B. IV antibiotics and follow up after a month, C. Tympanoplasty, D. Tympano-mastoid exploration
D: Tympano-mastoid exploration
Answer: D: Tympano-mastoid exploration 
Explanation: Tympano-mastiod exploration can be done through various procedures: - Canal wall down proceduresAtticotomy, and rarely radical mastoidectomy. - Canal wall up proceduresCoical mastoidectomy