This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidneys and Body Fluids, Subject name: Physiology
[{'content': 'Renin is secreted by \nSelect and explain. \nA. PCT, B. DCT, C. Collection duct, D. Juxtaglomerular apparatus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Juxtaglomerular apparatus(Ref: Ganong, 25th ed/p.672)Juxtaglomerular cells synthesize, store and release an enzyme called renin', 'role': 'assistant'}]