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
Keloid scars: 
Select and explain. 
A. Usually occur in the Caucasian race, B. Often occur in wounds which have healed perfectly without complications, C. Surgical treatment as a single modality has the least recurrence, D. Radiation should not be administered as it is a non¬malignant condition
B: Often occur in wounds which have healed perfectly without complications
Answer: B: Often occur in wounds which have healed perfectly without complications 
Explanation: None