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
Granisetron is used in? 
Select and explain. 
A. Motion sickness, B. Sedation in endoscopy, C. Chemotherapy induced nausea & vomiting, D. Gastroesophageal reflux disease
C: Chemotherapy induced nausea & vomiting
Answer: C: Chemotherapy induced nausea & vomiting 
Explanation: Ans. is 'c' i.e., Chemotherapy induced nausea & vomiting 5-HT3 blockers (e.g. ondansetron, granisetron etc) are the drugs of choice for chemotherapy induced nausea and vomiting.