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
How does gall bladder effect on pH of bile? 
Select and explain. 
A. Makes bile pH neutral, B. Bile pH decreases from 8 - 8.6 to 7 - 7.6., C. Bile pH increases from 7 - 7.6 to 8 - 8.6., D. No effect on bile pH
B: Bile pH decreases from 8 - 8.6 to 7 - 7.6.
Answer: B: Bile pH decreases from 8 - 8.6 to 7 - 7.6. 
Explanation: Bile pH decreases from 8 - 8.6 to 7 - 7.6. Alteration of Bile pH: Becomes less alkaline during storage. Bile pH decreases from 8 - 8.6 to 7 - 7.6.