This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
[{'content': 'Rhinolith can cause \nSelect and explain. \nA. Nasal obstruction, B. Foul smelling discharge, C. Pain, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All of the above * Rhinoliths are mineralized (calcified) foreign bodies in the nasal cavity that are a chance finding at anterior rhinoscopy. Rhinolith forms around the nucleus of a small exogenous foreign body or blood clot when calcium and phosphate deposit around it, i.e. mineralization around a foreign body. Clinical features include:-# More common in adults# Presents as unilateral nasal obstruction and foul smelling discharge (often blood stained)# Ulceration of the surrounding mucosa may lead to frank epistaxis and neuralgic pain.# Other symptoms may be headach, sinusitis and epiphora.", 'role': 'assistant'}]