This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neoplastic Disorders, Subject name: Surgery
Most common cancer of anus? 
Select and explain. 
A. Squamous, B. Basaloid, C. Cuboidal, D. Cloacogenic
A: Squamous
Answer: A: Squamous 
Explanation: Ans. (a) SquamousRef.: Bailey & Love 26th ed. /1267