This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
Embryo reduction of multiple pregnancy is done at: 
Select and explain. 
A. 8-10 weeks, B. 11-13 weeks, C. 13-15 weeks, D. 16-18 weeks
B: 11-13 weeks
Answer: B: 11-13 weeks 
Explanation: Embryo reduction in multifetal pregnancy us done usually at 11-13 weeks of gestation.For more information,refer page no 241 of dutta's text book of obsteics,8 th edition.