Which three statements are true about persistent configuration?()  
A、A. A user cannot set privileges on the persistent lightweight jobs
B、B. Persistent lightweight jobs generate a large amount of metadata
C、C. It is possible to create fully self-contained persistent lightweight jobs
D、D. The use of a template is mandatory to create persistent lightweight jobs
E、E. Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time