Which of the following statements about animal connective tissues is true?
(a) Enzymes embedded in the plasma membrane synthesize the collagen in the extracellular matrix extracellularly.
(b) In connective tissue, the intermediate filaments within the cells are important for carrying the mechanical load.
(c) Cells can attach to a collagen matrix by using fibronectin, an integral membrane protein.
(d) Proteoglycans can resist compression in the extracellular matrix.