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
An operated case of varicose veins has a recurrence rate of - 
Select and explain. 
A. About 10%, B. About 25%, C. About 50%, D. Over 60%
A: About 10%
Answer: A: About 10% 
Explanation: None