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
Which of the following anti histamine should be avoided in a truck driver with rhinitis? 
Select and explain. 
A. Diphenhydramine, B. Astemizole, C. Desloratadine, D. Fexofenadine
A: Diphenhydramine
Answer: A: Diphenhydramine 
Explanation: Diphenhydramine  is a 1st generation anti-histamine which has highly sedating property and hence should be avoided in truck drivers and swimmers.