This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
[{'content': 'The anterior and posterior neuropores close during which week of embryonic development? \nSelect and explain. \nA. Week 2, B. Week 3, C. Week 4, D. Week 5', 'role': 'user'}, {'content': "Answer: C \nExplanation: Anterior and posterior neuropores close during week 4 of development- the anterior neuropore by day 25, the posterior neuropore by day 28. Failure of the fusion of anterior neuropore results in Anencephaly Failure of the fusion of posterior neuropore results in Rachis chisis. Ref: Gray's Anatomy 41st edition Pgno: 238", 'role': 'assistant'}]