This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intersex, Subject name: Gynaecology & Obstetrics
[{'content': 'Gonads do not acquire male or female characteristics until \nSelect and explain. \nA. 7th week of development, B. 9th week of development, C. 12th week of development, D. 4th week of development', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Gonads acquire male or female characteristics only after 6 weeks of development (that is in the 7th week)', 'role': 'assistant'}]