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': 'Heparin does not cause \nSelect and explain. \nA. Osteoporasis, B. Factor V inhibition, C. Thrombocytopenia, D. Prolongation of a PTT', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Heparin doesnot cause factor V inhibition whereas it causes all the other three. From medical pharmacology padmaja 4th edition Page no 335', 'role': 'assistant'}]