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: Unknown
Tumour suppressor gene - 
Select and explain. 
A. k- RAS gene, B. Rb gene, C. FOS gene, D. MYC gene
B: Rb gene
Answer: B: Rb gene 
Explanation: Ans. is 'b' i.e., Rb gene