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': 'In a young patient with abdominal pain and feature most suggestive of ectopic pregnancy is : \nSelect and explain. \nA. Amenorrhea, B. Vomiting, C. Palpation of tender adnexal mass, D. Increase beta HCG in urine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Increase beta HCG in urine', 'role': 'assistant'}]