The son of a nursing home resident asks a nurse: "What is the significance of being certified in gerontology? I see that you are, but not all of the nurses are." What response best answers the family member's question?

"National certification is only available to nurses who have a Baccalaureate degree in nursing."

"National certification in gerontology is required for all nurses who have worked in this setting for 2 or more years."

"Only advanced practice nurses, like nurse practitioners, are certified in gerontology."

"National certification as a gerontological nurse is a way to demonstrate special knowledge in caring for older adults."