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: Pathology
The histopathology of osteopetrosis shows: 
Select and explain. 
A. EndosteaL bone formation and lack of normal bone resorption, B. Periosteal bone formation and lack of normal bone resorption, C. Presence of extra collagen fibres and Less calcification resulting in resistance of bones to fracture, D. Presence of numerous osteoclasts and a few osteoclasts
A: EndosteaL bone formation and lack of normal bone resorption
Answer: A: EndosteaL bone formation and lack of normal bone resorption 
Explanation: None