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
All of the following are effective against cytotoxic drug induced emesis except - 
Select and explain. 
A. Dexamethasone, B. Hyoscine, C. Metoclopramide, D. Ondansetron
B: Hyoscine
Answer: B: Hyoscine 
Explanation: Ans. is 'b' i.e., Hyoscine