This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
[{'content': "In contrast to heparin, enoxaparin: \nSelect and explain. \nA. Can be used without monitoring the patient's aPTT, B. Is less likely to have a teratogenic effect, C. Is more likely to be given intravenously, D. Is more likely to cause thrombosis and thrombocytopenia", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Enoxaprin is a LMW heparin. It does not require monitoring. Both heparin as well as enoxaprin do not cross placenta and are not teratogenic.', 'role': 'assistant'}]