This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
Which of the following is a radioprotector 
Select and explain. 
A. Colony stimulating factor, B. Cisplatin, C. Amifostine, D. Methotrexate
C: Amifostine
Answer: C: Amifostine 
Explanation: Amifostine:- It is an organic thiophosphate which on activation by alkaline phosphatase acts as a cytoprotective against cancer chemotherapy and radiotherapy. Uses:- It is paicularly used for prophylaxis of cisplatin induced neuro/nephrotoxicity, and radiotherapy related xerostomia. Adverse effects:- Sho term side effects of amifostine are nausea, vomiting, hypotension and infusion related reaction. Delayed adverse effect is hypocalcaemia. Ref:- kd tripathi; pg num:-876