This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endometriosis and Infertility, Subject name: Gynaecology & Obstetrics
[{'content': 'M/C time for embryo transfer after IVF is: \nSelect and explain. \nA. 2 days, B. 3 days, C. 4 days, D. 5 days', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b, i.e. 3 daysM/C time of embryo transfer = Day 3 (8 called Blastomere stage). Best result obtained with Day 5 transfer (Blastocyst transfer)', 'role': 'assistant'}]