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': 'Least malignant melanoma is \nSelect and explain. \nA. Lentigo maligna, B. Superifcial spreading, C. Nodular, D. Amelanotic', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]