A tissue sample has the following components: calcified matrix, collagen, and fibroblasts. Sandy has identified it as bone, but her instructor stated that was incorrect. Which statements below should her instructor use to explain the error?

a. Bone tissue has elastin fibers, not collagen fibers.
b. Calcified matrix is a characteristic of cartilage not bone tissue.
c. Fibroblasts are only present in cartilage tissue.
d. Bone tissue would have osteoblasts, osteoclasts, and osteocytes present.