Which three are true about using REST Enabled SQL to access a remote database? (Choose three.) 

Answer options:

A. Authentication must be done using the OAuth2 Client Credentials flow.
B. REST Enabled SQL must be enabled in the remote databases` ORDS configuration.
C. A wallet must be defined and configured on the remote database.
D. A REST Enabled SQL Reference must be created in Shared Components.
E. Authentication can be done using the remote database username and password.
F. The application parsing schema must be REST enabled.

BDE

Reference: https://docs.oracle.com/database/apex-18.1/HTMDB/rest-enabled-sql-creating.htm#HTMDB-GUID-0906921E-AF79-49D4-B909-1C090F805D9D