This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Pharmacology
[{'content': 'LMV heparin is preferred over unfranctioned heparin because \nSelect and explain. \nA. LMV heparin directly inhibits thrombin whereas unfranctioned heparin acts activation of antithrombin, B. LMV heparins have been lesser risk of causing bleeding, C. LMV heparin have lesser risk of causing bleeding, D. LMV heparin has consistent bioavalilabilty', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Refer KDT 7/e p 619 Major advantage of LMV heparins over unfranctioned heparin is that it does not require monitoring bad it has consistent subcutaneous bioavalilabilty Both of these work by activating antithrombin Risk of bleeding is present with both LMV as well as unfranctioned heparin None of these us effective orally', 'role': 'assistant'}]