This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypeension, Subject name: Medicine
[{'content': 'Elderly male patient has presented with recurrent falls. Which of the following medicines is responsible? \nSelect and explain. \nA. Prazocin, B. Metformin, C. Acarbose, D. Thiazides', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Prazocin is Antihypeensive drug | a1 -adrenergic antagonist. | leads to Ohostatic Hypotension & syncope', 'role': 'assistant'}]