This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
Smoking may be associated with all of the following cancers, except 
Select and explain. 
A. Ca Larynx, B. Ca Nasopharynx, C. Ca Bladder, D. None
D: None
Answer: D: None 
Explanation: Ans is None > Ca Nasopharynx