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': 'Teiary chorionic villi develop in which intrauterine week? \nSelect and explain. \nA. 3rd week, B. 5th week, C. 7th week, D. 9th week', 'role': 'user'}, {'content': 'Answer: A \nExplanation: HUMAN EMBRYOLOGY-INDERBIR SINGH tenth edition-page no 93', 'role': 'assistant'}]