This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'All are true about gestational diabetes except : \nSelect and explain. \nA. Chances of recurrence in next pregnancy, B. One third cases become permanent, C. Congenital malformation is common, D. Insulin is treatment of choice', 'role': 'user'}, {'content': 'Answer: B \nExplanation: One third cases become permanent', 'role': 'assistant'}]