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
Hydatidiform mole follow up reliable fest- 
Select and explain. 
A. BetaHCG, B. US, C. Clinical examination, D. Serum estradiol levels
A: BetaHCG
Answer: A: BetaHCG 
Explanation: Ans-A i.e., Beta HCG Follow up in a hydatidiform mole:o Serum beta HCG levels measured using radioimmunoassay tests in serum and urine are the most reliable for follow up of cases of hydatidiform mole.It usually regresses to normal in 3 months following the evacuation of hydatidiform mole.Persistent or rising beta HCG levels warrant further evaluation and management.