This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis of Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'A 22 year old woman just completed her first trimester of pregnancy. By what time should she feel her first fetal movements:- \nSelect and explain. \nA. 12-16 weeks, B. 16-20 weeks, C. 26 - 28 weeks, D. 28-32 weeks', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Quickening is perception of fetal movements by the pregnant lady. Primigravida - Quickening occurs at 18 - 20 weeks Multigravida - Quickening occurs at 16 - 18 weeks', 'role': 'assistant'}]