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
Topical treatment for recurrent respiratory papillomatosis includes: 
Select and explain. 
A. Acyclovir, B. Cidofovir, C. Ranitidine, D. Zinc
B: Cidofovir
Answer: B: Cidofovir 
Explanation: Ans: B. Cidofovir(Ref Dhingra 74, p346, 6/c, p305).Cidofovir:Topical treatment for recurrent respiratory papillomatosis (Incomplete in stopping tumor growth).Mostly injected to control frequency of tumor growth.