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: Medicine
The normal capacity of the gallbladder is: 
Select and explain. 
A. 100 ml of bile, B. 10 ml of bile, C. 30 ml of bile, D. 250 ml of bile
C: 30 ml of bile
Answer: C: 30 ml of bile 
Explanation: The normal capacity of the gallbladder is 30 mL of bile. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 2616