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
TSC1 gene plays a vital role in pathogenesis of a neurocutaneous syndrome called Tuberous sclerosis. It is located on which chromosome? 
Select and explain. 
A. Chromosome 16, B. Chromosome 9, C. Chromosome 4, D. Chromosome 3
B: Chromosome 9
Answer: B: Chromosome 9 
Explanation: TSC1 gene is located on Chromosome 9.
TSC2 gene is located on Chromosome 16.