This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Histaminics, Subject name: Pharmacology
Treatment for motion sickness for a trip next morning? 
Select and explain. 
A. Scopalamine patch a night before, B. Tab. Ranitidine one night before and then before the trip, C. Dimenhydrinate 1 hour before, D. Omeprazole
A: Scopalamine patch a night before
Answer: A: Scopalamine patch a night before 
Explanation: ANS. AFor the prophylaxis of motion sickness, apply scopalamine one patch behind ear at least 4-12 hours (preferably 12 hour) before anticipated exposure to motion.