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
Which of the following is the most impoant risk factor in the aetiology of intraventricular haemorrhage (IVH) in neonates? 
Select and explain. 
A. Coagulation disorder, B. Continuous Positive airway pressure, C. Pneumothorax, D. Extreme prematurity
D: Extreme prematurity
Answer: D: Extreme prematurity 
Explanation: All the options mentioned in the question are risk factors for IVH. However, the single most impoant factor is prematurity with IVH being very uncommon in term babies IVH occur due to fragile, highly vascular collection of vessels near the lateral ventricle, known as germinal matrix