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
Most sensitive phase in cell division to radiation is 
Select and explain. 
A. G1 phase, B. G2 phase, C. S phase, D. None of the above
B: G2 phase
Answer: B: G2 phase 
Explanation: None