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 organ is spared in asymmetrical IUGR ? \nSelect and explain. \nA. Liver, B. Muscle, C. Subcutaneous fat, D. Brain', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Brain', 'role': 'assistant'}]