This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
In comparison to coical nephron, juxtamedullary nephron 
Select and explain. 
A. More in numbers, B. Has long loop of Henle, C. Glomerulus is located superficially in coex, D. Their efferent aeriole has no connection with vasa-recta
B: Has long loop of Henle
Answer: B: Has long loop of Henle 
Explanation: Juxtamedullary nephron one whose proximal convoluted tubule is close to the coicomedullary border and whose loop of Henle extends deep into the renal medulla. Ref: Ganong's review of medical physiology; 24th edition; page no; 674 Ref of img: