Which of the following user storage and authentication options are possible in SAP Enable Now,...

Users are not stored anywhere; access is anonymous without the need for authentication.

Users are stored in customer's IDP; authentication via Single Sign On

Users are stored in SAP S/4HANA authentication with username and password.

Users are stored in SAP Enable Now Manager only; authentication with username and password.

Users are stored in SAP IAS authentication via Single Sign On.