This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autacoids, Subject name: Pharmacology
[{'content': 'High anticholinergic propey is present in the following antihistaminic agent \nSelect and explain. \nA. Astemizole, B. Diphenhydramine, C. Terfenadine, D. Fexofenadine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]