How Do Job Objects Facilitate Resource Management for Servers

Multiple Choice

How do job objects facilitate resource management for servers?

A) A server can group all the processes dedicated to servicing a client's request (or all clients' requests) in a job object and restrict the resources (e.g., processor time and working set size) allocated to those processes.
B) A server can queue work items to a job object, which dispatches one of its dedicated system worker threads to fulfill the request. This frees the server from unnecessarily creating and terminating threads for each client request.
C) A server can register a job object with an I/O completion port. When an I/O for a file associated with the port completes, the job object dispatches one of its dedicated system worker threads to complete I/O processing, freeing the server from this responsibility.
D) all of the above