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
Endoscopic surgery is not done in - 
Select and explain. 
A. Optic nerve compression, B. CSF rhinorrhea, C. Dacryocystic carcinoma, D. Ethmoidal polyps
C: Dacryocystic carcinoma
Answer: C: Dacryocystic carcinoma 
Explanation: None