This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Paediatrics, Subject name: Pediatrics
Basic Pathophysiology in Potter sequence: 
Select and explain. 
A. Maternal diabetes, B. Pulmonary hypoplasia, C. Bilateral renal agenesis, D. Oligohydramnios
C: Bilateral renal agenesis
Answer: C: Bilateral renal agenesis 
Explanation: Potter sequence: Bilateral renal agenesis incompatible with extrauterine life produces Potter sequence. Death occurs sholy after bih from pulmonary hypoplasia Potter facies: Eyes are widely separated with epicanthic folds, ears are low set, nose is broad & compressed flat, the chin is receding, and there are limb anomalies. Neonates with bilateral renal agenesis die of pulmonary insufficiency from pulmonary hypoplasia rather than renal failure