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: Surgery
Five day self limting pain is due to 
Select and explain. 
A. Internal hemorrhoids, B. External hemorrhoids, C. Fistula in ano, D. Fissure in ano
B: External hemorrhoids
Answer: B: External hemorrhoids 
Explanation: External hemorrhoids which are painful the pain reduces after 5 days.