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
The most effective antiemetic for controlling cisplatin-induced vomiting is : 
Select and explain. 
A. Prochlorperazine, B. Ondansetron, C. Metoclopramide, D. Aprepitant
B: Ondansetron
Answer: B: Ondansetron 
Explanation: 5HT3 antagonists like ondansetron, granisetron and tropisetron are the agents of choice for chemotherapy-induced vomiting.