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
True about keloid scar is 
Select and explain. 
A. Non-familial, common in children, males affected, B. Non-familial, does not outgrow the margin, blacks are affected., C. Familial, females are affected, outgrows the margins, D. Familial, men affected, whites affected more
C: Familial, females are affected, outgrows the margins
Answer: C: Familial, females are affected, outgrows the margins 
Explanation: None