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
[{'content': "Ulcer that may develop in burn tissue is: \nSelect and explain. \nA. Marjolin's, B. Rodent, C. Melanoma, D. Curlings", 'role': 'user'}, {'content': "Answer: A \nExplanation: When a squamous cell carcinoma (SCC) appears in scar it is known as Marjolins's ulcer. Ref: Bailey and Love's Sho Practice of Surgery, 22nd Edition, Page 133, 25th Edition, Page 611 and 23rd Edition, Page 148; Clinical Surgery By S. Das, Page 108.", 'role': 'assistant'}]