This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
Marjolin's ulcer is a 
Select and explain. 
A. Malignant ulcer found on the scar of burn, B. Malignant ulcer found on infected foot, C. Trophic ulcer, D. Meleney's gangrene
A: Malignant ulcer found on the scar of burn
Answer: A: Malignant ulcer found on the scar of burn 
Explanation: Marjolin's ulcer is well-differentiated squamous cell carcinoma which occurs in chronic scars like burn scar, scar of venous ulcer. It is slow growing, locally malignant disease. Reference : SRB's Manual of Surgery, 6th Edition, page no = 283.