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
Which of the following drugs acts by increasing bone formation & inhibiting bone resorption 
Select and explain. 
A. Denosumab, B. Zoledronate, C. Strontium ranelate, D. Calcitonin
C: Strontium ranelate
Answer: C: Strontium ranelate 
Explanation: Strontium ranelate resembles calcium and incorporated into bone matrix and promotes bone formation. But osteoclasts can't remove it and thus inhibits bone resorption as well.