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': 'Which one of the following is not associated with diabetes in pregnancy ? \nSelect and explain. \nA. Sacral agenesis of the fetus, B. Advanced placental grading, C. Baby weight > 3.5 kg, D. Hydramnios', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Advanced placental grading', 'role': 'assistant'}]