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': 'A 28 years old female with a history of 8 wks amenorrhoea complains of vaginal bleeding and lower abdominal pain. On USG examination there is gestational sac with absent fetal parts. The diagnosis is: \nSelect and explain. \nA. Ectopic pregnancy, B. Incarcerated abortion, C. Threatened abortion, D. Corpus luteum cyst', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Friends, let’s consider each option one by one.\nOption ‘a’: i.e. Ectopic pregnancy', 'role': 'assistant'}]