This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Twin Pregnancy, Molar Pregnancy, Gestational Trophoblastic disease and contraception in special situations (Sour Grapes!), Subject name: Gynaecology & Obstetrics
[{'content': 'Most common presentation in case of twins: \nSelect and explain. \nA. Veex-veex, B. Veex-breech, C. Veex-face, D. Veex-brow', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most common presentation of twins is veex - veex 2nd most common presentation is veex - breech.', 'role': 'assistant'}]