This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnostic and operative ENT, Subject name: ENT
[{'content': 'Not seen in Post-adenoidectomy is \nSelect and explain. \nA. Velopharyngeal insufficiency, B. Hyponasality, C. Retropharyngeal abscess, D. Base of skull fracture', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Complications of adeniodectomy: Haemorrhage Injury to eustachian tube opening Injury to pharyngeal musculature and veebrae Griesel syndrome Velopharyngeal insufficiency Nasopharyngeal stenosis Recurrence Ref: Dhingra 7e pg 491', 'role': 'assistant'}]