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: Pathology
The cause of oedema in Nephritic syndrome is - 
Select and explain. 
A. Decreased in plasma protein concentration, B. Increased in plasma protein concentration, C. Reduced plasma osmotic pressure, D. Sodium and water retension
D: Sodium and water retension
Answer: D: Sodium and water retension 
Explanation: Ans. is 'd' i.e., Sodium and water retensiono Cause of edema:?(i) In nephrotic syndrome --> Hypoproteinemia ( decreased plasma protein concentration) and edema is massive.(ii) In nephritic syndrome --> results from sodium and water retention and edema is usually mild.