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
The following are true of haemorrhoids except ? 
Select and explain. 
A. They are aeriolar dilatations, B. They are common causes of painless bleeding, C. They cannot be per rectally palpated, D. They can be banded
A: They are aeriolar dilatations
Answer: A: They are aeriolar dilatations 
Explanation: Ans. is 'a' i.e., They are aeriolar dilatations