This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ectopic Pregnancy (Hello ! Where are you ?), Subject name: Gynaecology & Obstetrics
[{'content': 'Recurrence rate of ectopic pregnancy in a patient previously treated for ectopic- \nSelect and explain. \nA. 25%, B. 15%, C. 30%, D. 50%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A previous history of ectopic pregnancy is the strongest risk factor for another ectopic pregnancy. The increased incidence is due to both : presence of previous factors that led to initial ectopic and potential damage to fallopian tube from the prior ectopic and its treatment. Chance for intrauterine pregnancy: 40 % Chance for recurrent ectopic: 15 % (range: 4 % to 28%)', 'role': 'assistant'}]