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': 'Which of the following defines heterotopic pregnancy \nSelect and explain. \nA. One tubal and one abdominal pregnancy, B. One ectopic and one intrauterine pregnancy, C. Two pregnancies, one in each fallopian tube, D. Two ectopic pregnancies in one fallopian tube.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 1 Ectopic pregnancy + 1 intrauterine pregnancy is heterotopic pregnancy.', 'role': 'assistant'}]