Which of the following is true of Service Catalog Items in relation to the Service Catalog?

While some processing happens behind the scenes, Service Catalog Items themselves are the visible user-facing components, not processes that "run behind the scenes."

Service Catalog Items are the specific offerings (e.g., "Request a Laptop") that users see and interact with, making them the essential building blocks without which the Service Catalog would be empty and unusable.

Service Catalog Items are not optional if a Service Catalog is to be functional; they define what can be requested.

While an item can contain options (e.g., variables), stating "They provide options" is less accurate as a primary description of the item itself than "They are the building blocks" of the catalog.