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': 'Raised beta-HCG levels are seen in : \nSelect and explain. \nA. DM, B. Preeclampsia, C. Ectopic pregnancy, D. Rh. Incompatibility', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is d Rh incompatibility hCG levels : Increased Decreased M Multiple fetusesdeg R Rh incompatibilitydeg D Down syndrome deg C Choriocarcinomadeg H Hydatidiform moledeg Ectopic pregnancydeg _Impending spontaneous aboiondeg Mnemonic: MR. DCH', 'role': 'assistant'}]