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
[{'content': 'A highway truck driver has profuse rhinorrhea and sneezing. Which amongst the following drugs would you prescibe him? \nSelect and explain. \nA. Pheniramine, B. Promethazine, C. Dimenhydrinate, D. Cetrizine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Cetrizine o Because the patient is a truck driver, we'll prefer a drug with least or no sedative effect. o Amongst the choices provided cetrizine is the antiallergic with least sedative action and hence the agent of choice.", 'role': 'assistant'}]