Which statement about CA AppLogic applications is TRUE?

They are secondary entities and must be combined with other components to run as end-to-end services.

They are multi-system objects that require multiple components to run them as a distributed application.

They are hardware dependent and normally contain references to hardware such as servers, IP addresses, and host names.

They are complete N-tier virtual business services, which include everything, from firewalls to data sources, needed to provision the service to a customer.