For backup and restore procedures in Cloud Pak for Data, which technologies or methodologies are crucial?

For backup and restore procedures in Cloud Pak for Data, which technologies or methodologies are crucial?
A . Relying solely on physical backups taken at the data center.
B . Incorporating both data and configuration backups.
C . Using cloud-based storage solutions for redundancy.
D . Periodic testing of restore procedures to ensure backup integrity.

Answer: BCD