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 60–year old hypertensive patient on angiotensin II receptor antagonist (losartan) is posed for hernia repair surgery. The antihypertensive drug should be: \nSelect and explain. \nA. Continued till the day of operation, B. Discontinued 24 hrs preoperatively, C. Discontinued one week preoperatively, D. Administered in an increased dosage on the day of operation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]