This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Placenta Previa, Subject name: Gynaecology & Obstetrics
[{'content': '35 weeks pregnancy, painless blood discharge, most likely diagnosis is - \nSelect and explain. \nA. Placenta previa, B. Abruptio placenta, C. Ectopic pregnancy, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., Placenta previa "The only symptom ofplacenta previa is vaginal bleeding. The classical features of bleeding in placenta previa are sudden onset, painless, apparently causeless & recurrent"o Abruptio placenta usually presents with abdominal pain or discomfort followed by vaginal bleeding,o Classical triad of ectopic pregnancy consists of abdominal pain, amenorrhea & lastly appearance of vaginal bleeding.', 'role': 'assistant'}]