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
[{'content': 'Clinical features of nasopharyngeal angiogibroma are -a) 3rd to 4th decadesb) Adolescent malec) Epistaxis and nasal obstruction are the cardinal symptomd) Radiotherapy is the Rx of choicee) Arises from posterior nasal cavity \nSelect and explain. \nA. bce, B. bc, C. acd, D. ace', 'role': 'user'}, {'content': 'Answer: A \nExplanation: NFA occurs in adolescent males.\nNasal obstruction and epistaxis are the most common presenting symptoms.\nIt arises in the posterior part of nasal cavity near the sphenopalatine foramen.\nTreatment of choice is surgery.', 'role': 'assistant'}]