This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: IUGR and Feeding of Preterm Neonate, Subject name: Pediatrics
In asymmetrical IUGR which organ is not affected? 
Select and explain. 
A. Subcutaneous fat, B. Muscle, C. Liver, D. Brain
D: Brain
Answer: D: Brain 
Explanation: In asymmetric IUGR, brain growth (head circumference) - spared