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
[{'content': 'Eye movements in fetus begins from \nSelect and explain. \nA. 6 to 9 weeks, B. 11 to 14 weeks, C. 16 to 18 weeks, D. 28 to 32 weeks', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 16th Gestational WeekThe fetal crown-rump length is 12 cm, and the weight is 110grams. By 14 weeks, gender can be determined by experienced observers by inspection of the external genitalia. Eye movements begin at 16 to 18 weeks, coinciding with midbrain maturation.Reference: William&;s Obstetrics; 24th edition; Chapter 7; Embryogenesis and Fetal Morphological Development', 'role': 'assistant'}]