This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Cancer, Subject name: Pharmacology
[{'content': 'Chemoradiation was given to a patient. Which drug given will reduce toxicity caused by radiotherapy? \nSelect and explain. \nA. Vitamin A, B. Gemcitabine, C. Amifostine, D. Actinomycin D', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref: Cancer Medicine 6th ed. pg. 595Radiosensitizers vs Radiation protection agentRadiosensitizersRadiation protection agentActinomycinGemcitabineHydroxyureaMetronidazoleMisonidazole5-FUMitomycinPaclitaxelAmifistoneGM-CSFTL-1', 'role': 'assistant'}]