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
Which of the following increases rennin release? 
Select and explain. 
A. Parasympathetic stimulation, B. Renal hypertension, C. Renal hyperperfusion, D. Decreased Nacl in macula densa
D: Decreased Nacl in macula densa
Answer: D: Decreased Nacl in macula densa 
Explanation: Factor which increase rennin release :

Renal hypoperfusion and hypotension
Symphathetic stimulation
Renal ischaemia
Decreased Nacl in macula densa