What is the purpose of the use “command” In the CLI?

What is the purpose of the use “command” In the CLI?

A.
Use a specified server pool as the default for all commands requiring a server pool
argument.

B.
Use a specified virtual machine name as the default for all commands requiring a virtual
machine argument.

C.
Use a specified user name as the default for all commands requiring a user name
argument.

D.
Use a specified server name as the default for all commands requiring a server argument.

E.
Use a specified group name as the default for all commands requiring a group argument.