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: Microbiology
Coincidental malignancy in the upper respiratory tract with inveed papillomas seen in 
Select and explain. 
A. 0.10%, B. 2%, C. 4%, D. 5%
C: 4%
Answer: C: 4% 
Explanation: Coincidental malignancy in the upper respiratory tract with inveed papilloma is seen in 4%Malignant transformation of the tumor itself is seen in 8%