Which two statements are true about Database Vault factors?

changing a factor type can change how factors are evaluated.
You can use a factor to enforce conditions for a command rule.
You get an error at the time of factor creation If the retrieval method function you have specified does not exist.
You can configure a factor to be evaluated only once per session.
A factor can reference a function in another schema to compute its value, provided execute privilege is granted to the sys user