Which of the following is true of intramembranous, rather than endochondral, ossification?

A) A hyaline cartilage model is used
B) Long bones are formed
C) Mesenchymal cells differentiate into osteoblasts within connective tissue
D) Periosteal buds invade the lacunae left behind by dead chondrocytes
E) Secondary ossification centers form in the epiphyses