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
In GIT most alkaline fluid is secreted by ________ 
Select and explain. 
A. Pancreatic juice, B. Large intestine, C. Bile, D. Brunner's gland of duodenum
B: Large intestine
Answer: B: Large intestine 
Explanation: Brunner's gland of duodenum secretes most alkaline fluid followed by pancreatic juice.