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
Raised beta-HCG levels are seen in : 
Select and explain. 
A. DM, B. Preeclampsia, C. Ectopic pregnancy, D. Rh. Incompatibility
D: Rh. Incompatibility
Answer: D: Rh. Incompatibility 
Explanation: 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