This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'CNS development begins in which intrauterine week? \nSelect and explain. \nA. 5 weeks, B. 6 weeks, C. 3 weeks, D. 2 weeks', 'role': 'user'}, {'content': 'Answer: C \nExplanation: HUMAN EMBRYOLOGY-INDERBIR SINGH TENTH EDITION-PAGE NO:350', 'role': 'assistant'}]