Which statement about the cytoskeleton is true?

• A. Intermediate filaments are hollow tubes of protein that provide structural support.
• B. Microtubules are chains of proteins that resist stretching.
• C. Microfilaments are more permanent structures in cells compared to intermediate filaments and microtubules.
• D. Plant cells lack a cytoskeleton because they have a rigid cell wall.
• E. Components of the cytoskeleton often mediate the movement of organelles within the cytoplasm.