What is the difference between endochondral and intramembranous bone formation? I- Endochondral formation is formed by cartilage, which calcifies....

What is the difference between endochondral and intramembranous bone formation?

I- Endochondral formation is formed by cartilage, which calcifies. Intramembranous formation occurs when mesenchymal cells differentiate into osteoblasts that produce the bone matrix, which calcifies and forms the bone.
II- Endochondral formation occurs when mesenchymal cells differentiate into osteoblasts that produce the bone matrix, which calcifies and forms the bone. Intramembranous formation is formed by cartilage, which calcifies.
III- Endochondral formation occurs when mesenchymal cells differentiate into chondrocytes that produce the cartilage matrix, which calcifies and forms the bone. Intramembranous formation occurs when mesenchymal cells differentiate into osteoblasts that produce the bone matrix, which calcifies and forms the bone.
IV- Endochondral formation occurs when mesenchymal cells differentiate into osteoblasts that produce the bone matrix, which calcifies and forms the bone. Intramembranous formation occurs when mesenchymal cells differentiate into chondrocytes that produce the cartilage matrix, which calcifies and forms the bone.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) Only IV is correct.