This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
A 7 years child presents with unilateral nasal obstruction with foul-smelling nasal discharge. The diagnosis is 
Select and explain. 
A. Foreign body, B. Rhinophyma, C. Rhinosporidiosis, D. Angiofibroma
A: Foreign body
Answer: A: Foreign body 
Explanation: Unilateral foul smelling discharge in a child is pathognomic of a foreign body.Ref: PL Dhingra, Diseases of Ear, Nose & Throat, 7th edition, pg no. 181