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
Antiemetic used in vomiting induced by anticancer drugs is: 
Select and explain. 
A. Ondansetron, B. Cisapride, C. Metoclopramide, D. Tritluopromazine
A: Ondansetron
Answer: A: Ondansetron 
Explanation: Ondansetron