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
Not a premalignant ulcer ? 
Select and explain. 
A. Bazin's ulcer, B. Pagets disease of nipple, C. Marjolin's ulcer, D. Lupus vulgaris
A: Bazin's ulcer
Answer: A: Bazin's ulcer 
Explanation: Ans. is 'a' i.e., Bazin's ulcer