This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin, Bones and Joints, Subject name: Pathology
Chondroblastoma most commonly occurs in: 
Select and explain. 
A. Metaphysis, B. Diaphysis, C. Epiphysis, D. Medullary cavity
C: Epiphysis
Answer: C: Epiphysis 
Explanation: None