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: Pathology
[{'content': 'BRCA-1 and BRCA-2 located respectively on? \nSelect and explain. \nA. Chromosome 17 and Chromosome 22, B. Chromosome 17 and Chromosome 13, C. Chromosome 22 and Chromosome 17, D. Chromosome 13 and Chromosome 17', 'role': 'user'}, {'content': 'Answer: B \nExplanation: BRCA 1 gene is located at 17q21\nBRCA 2 gene is located at 13q12.3', 'role': 'assistant'}]