In the case of a manual login to Manager, what should you consider regarding the user names and passwords?

In the case of a manual login to Manager, what should you consider regarding the user names and passwords?
A . User names and passwords are always manually created.
B. User names and passwords must have special characters.
C. User names and passwords can come from external identity providers.
D. User names and passwords must be imported via Excel before use.

Answer: C