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
The most radiosensitive cells in the body are 
Select and explain. 
A. Endothelial cells, B. Epithelial cells, C. Red blood cells, D. White blood cells
D: White blood cells
Answer: D: White blood cells 
Explanation: None