This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Gynaecology & Obstetrics
[{'content': "The contraceptive which is contraindicated in DVT is? \nSelect and explain. \nA. OCP, B. Barrier method, C. Billing's method, D. Non hormonal IUCD", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hormonal contraceptives Estrogen - aerial thrombosis Progesterone - venous thrombosis Progesterone or estrogen preparations are therefore not preferred in DVT patient.', 'role': 'assistant'}]