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: Physiology
Secretion of bile occurs into: 
Select and explain. 
A. Jejunum, B. Duodenum, C. Ileum, D. Colon
B: Duodenum
Answer: B: Duodenum 
Explanation: Bile is secreted continually by the liver cells, but most of it is normally stored in the gallbladder, until it is needed in the duodenum.  
Reference: GUYTON AND HALL TEXTBOOK OF MEDICAL PHYSIOLOGY,THIRTEENTH EDITION page 829