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: Anaesthesia
What is not true about preoperative modification of drugs? 
Select and explain. 
A. Lithium should be stopped 2-3 days before, B. Low dose aspirin should be stopped 7 days before, C. TCAs can be continued till the date of operation, D. Oral anticoagulants are stopped 4 days before
B: Low dose aspirin should be stopped 7 days before
Answer: B: Low dose aspirin should be stopped 7 days before 
Explanation: Ans. is 'b' i.e., Low dose aspirin should be stopped 7 days before Antiplatelet drugs like clopidogrel and conventions dose of aspirin should be stopped 7 days prior to surgery.But low dose aspirin can be continued till the day of surgery.