This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstetrics, Subject name: Gynaecology & Obstetrics
Post treatment HCG levels, during the follow up of molar pregnancy evacuation, comes back to normal in: 
Select and explain. 
A. 3 weeks, B. 6 weeks, C. 9 weeks, D. 12 weeks
C: 9 weeks
Answer: C: 9 weeks 
Explanation: HCG follow up of vesicular mole: - weekly HCG estimation till negative (vesicular mole takes 9 weeks and paial mole takes 7 weeks) - weekly HCG till 3 more weeks - Once in a month for 6 months . Avoid pregnancy during this time. Use contraception, best being COCPs