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
Bone resorption is enhanced by: 
Select and explain. 
A. PGD2, B. PGF2, C. PGE2, D. PGI2
C: PGE2
Answer: C: PGE2 
Explanation: None