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: Radiology
Isotope used for liver scan is: 
Select and explain. 
A. Technetium, B. Its', C. Cobalt 60, D. None
A: Technetium
Answer: A: Technetium 
Explanation: Ans. Technetium