Which statement is true about server authorizations when installing IBM Optim?

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Which statement is true about server authorizations when installing IBM Optim?

A. On a Windows machine, when the Optim Server is run as a process, the Server uses the credentials of an explicit user ID.
B. Super-User Server credentials are required to change the effective user ID and group ID when running on a Sun Solaris machine.
C. The Optim Server requires the user to have only the privilege, log on as a batch job. when the Optim Server is run as a service on a Windows machine.
D. On an Ubuntu machine, if the Server daemon is started as part of INIT processing, you must log on with the proper User ID before starting the daemon, or use the SU (substitute user) command.