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: Pharmacology
Mechanism of Calcitriol is: 
Select and explain. 
A. Decreased calcium resorption from bone, B. Increase calcium absorption from intestine, C. Decreased calcium absorption from kidney, D. Decrease calcium absorption from intestine
B: Increase calcium absorption from intestine
Answer: B: Increase calcium absorption from intestine 
Explanation: None