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: Unknown
[{'content': 'In a case of ectopic pregnancy, medical treatment is contraindicated if: \nSelect and explain. \nA. Sac size is 3.0 cm, B. Serum HCG levels > 1500 miu / ml, C. Significant hemoperitoneum is present, D. Absent fetal activity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Criteria for medical treatment \n1) Ectopic mass <3.5cm – the presence of fetal cardiac activity is a contra-indication to medical treatment\n2) No fetal cardiac activity\n3) Initial hCG <3000iu/l\n4) The patient must be hemodynamically stable, with no signs or symptoms of active bleeding or hemoperitoneum.\n5) She should not have any contraindications to the use of methotrexate.', 'role': 'assistant'}]