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 radioresistant among the following is/are: 
Select and explain. 
A. Neurons, B. Epithelial cells, C. Erythrocytes, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None