This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anticoagulants and Coagulants, Subject name: Pharmacology
[{'content': 'A PTT is required for monitoring of - \nSelect and explain. \nA. Streptokinase, B. Warfarin, C. Heparin, D. Tranexamicacid', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Heparin o Monitoring of unfractionated heparin - aPTTo Monitoring of oral anticoagulants - PT/INRo Monitoring of LMW heparins - No monitoring required", 'role': 'assistant'}]