This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pathology
Clear cell variety of Renal cell carcinoma is related to gene located on chromosome - 
Select and explain. 
A. 3, B. X, C. 22, D. 20
A: 3
Answer: A: 3 
Explanation: Ans. (a) 3(Ref: Robbins 9th/pg953-955; 8th/pg 964-966)Clear cell variety of Renal cell carcinoma is related to gene located on chromosome 3