This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Bile is concentrated in the gallbladder to _______ times 
Select and explain. 
A. 5, B. 10, C. 20, D. 50
A: 5
Answer: A: 5 
Explanation: Functions of Gallbladder Reservoir of bile Concentration of bile 5-10 times Secretion of mucus, 20ml/day by tubuloalveolar glands Acidification of bile Ref: Sabiston 20th edition Pgno :1482