This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin, Subject name: Pathology
[{'content': "Carcinoma with no or minimal metastasis? \nSelect and explain. \nA. Squamous cell carcinoma, B. Basal cell carcinoma, C. Melanoma, D. Leydig's cell carcinoma", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e., Basal cell carcinoma "Basal cell carcinoma can be locally destructive, but only exceptional reports of cases with metastatic behavior exist in literature." - Atlas of Diagnostic Oncology p.452"BCCs are differentiated and usually superficial with minimal metastatic potential." - Pathology and Genetics of Tumors of the Urinary System and Male Genital Organs p.287', 'role': 'assistant'}]