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: Medicine
Renin plays important role in - 
Select and explain. 
A. Renovascular hypertension, B. Malignant hypertension, C. Coronary artery disease, D. Essential hypertension
A: Renovascular hypertension
Answer: A: Renovascular hypertension 
Explanation: None