This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'Most common type of twin pregnancy is : \nSelect and explain. \nA. Veex + transverse, B. Both veex, C. Veex + breech, D. Both breech', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b i.e. Both veex In twins most common lie of both the fetus at term is longitudinal.deg Rarest lie is both the twins transverse.deg Presentations : Both veex (Most common) 60% Veex (1st) - Breech (1Ind) 20% Breech (1st) - Veex (11nd) 10% Both Breech 8 - 10% Note : Interlocking of twins is a rare complication seen in twins with 1st Breech presentation and Ind veex presentation.', 'role': 'assistant'}]