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 antihistaminic agents lack anticholinergic property EXCEPT : 
Select and explain. 
A. Promethazine, B. Astemizole, C. Levocetirizine, D. Loratadine
A: Promethazine
Answer: A: Promethazine 
Explanation: All the drugs listed in the question are second generation anti-histaminic agents except promethazine.