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 10 years child has unilateral nasal obstruction epistaxis, swelling over cheek, the diagnosis is - 
Select and explain. 
A. Nasal polyp, B. Nasopharyngeal carcinoma, C. Angiofibroma, D. Foreign bodies
C: Angiofibroma
Answer: C: Angiofibroma 
Explanation: None