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
[{'content': 'DOC for Cisplatin induced nausea & vomiting occuring within 24 hours is \nSelect and explain. \nA. Aprepitant, B. Fosaprepitant, C. Ondansetron, D. Promethazine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: DOC for Cisplatin induced nausea & vomiting within 24 hours is Ondansetron.\nDOC for Cisplatin induced nausea & vomiting\xa0after 2days is Aprepitant.', 'role': 'assistant'}]