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: Physiology
All except one results in increased secretion of Renin 
Select and explain. 
A. Renal ischaemia, B. Decreased amount of Na+ in DCT, C. Decreased amount of Na+ in PCT, D. Narrowing of afferent arterioles
C: Decreased amount of Na+ in PCT
Answer: C: Decreased amount of Na+ in PCT 
Explanation: Renin release is stimulated by

Reduced Na+ in macula densa in distal tubule.
Decreased GFR- Renal ischemia, afferent arteriolar constriction.