Which statement about Type II pneumocytes is true besides surfactant production?

Which statement about Type II pneumocytes is true besides surfactant production?

• A. They form the majority of the alveolar surface for gas exchange.
• B. They are primarily responsible for alveolar macrophage activity.
• C. They line the alveolar walls to facilitate gas diffusion.
• D. They can differentiate into Type I pneumocytes to repair the epithelium.

Answer: (D)