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: Pharmacology
Drug that is radioprotective is : 
Select and explain. 
A. Paclitaxel, B. Vincristine, C. Etoposide, D. Amifostine
D: Amifostine
Answer: D: Amifostine 
Explanation: None