This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gallbladder, Subject name: Surgery
What is the name of this congenital anomaly seen on ultrasound? 
Select and explain. 
A. Moynihan's hump, B. Phrygian cap, C. Duplication, D. None of the above
B: Phrygian cap
Answer: B: Phrygian cap 
Explanation: The USG image shows the infoldings of septum b/w fundus & body Phrygian cap is M.C congenital anomaly of gall bladder characterized by infoldings of septum b/w fundus & body. Here the functions of GB are normal & it does not increase the risk of any other malignancy. Not an indication of prophylactic cholecystectomy.