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
All are true regarding periventricular leukomalacia except 
Select and explain. 
A. Appear as echolucent areas (cysts) on neuroimaging in preterm neonate., B. Require atleast 2 weeks to form., C. Presence at birth helps to determine timing of hemorrhagic event., D. Cystic areas in grey matter of brain that develop after ischemic infarction.
D: Cystic areas in grey matter of brain that develop after ischemic infarction.
Answer: D: Cystic areas in grey matter of brain that develop after ischemic infarction. 
Explanation: Periventricular leukomalacia - refers to cystic areas deep in white matter of brain that develop after hemorrhagic or ischemic infarction.