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
BRCA-1 and BRCA-2 located respectively on? 
Select and explain. 
A. Chromosome 17 and Chromosome 22, B. Chromosome 17 and Chromosome 13, C. Chromosome 22 and Chromosome 17, D. Chromosome 13 and Chromosome 17
B: Chromosome 17 and Chromosome 13
Answer: B: Chromosome 17 and Chromosome 13 
Explanation: BRCA 1 gene is located at 17q21
BRCA 2 gene is located at 13q12.3