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: Surgery
Hand joining sign is characteristic of 
Select and explain. 
A. Pelviceal duplication, B. Uerterocoele, C. Ureteric duplication, D. Horseshoe kidney
D: Horseshoe kidney
Answer: D: Horseshoe kidney 
Explanation: Both kidneys meet in midline seen has hand joining sign.