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
A specimen for a biopsy should be taken from: 
Select and explain. 
A. Necrotic area, B. Subdermat layer, C. Border of an ulcerated area, D. Center of an ulcerated area
C: Border of an ulcerated area
Answer: C: Border of an ulcerated area 
Explanation: None