Which statement is TRUE about delegating an existing domain to the Oracle Cloud Infrastructure (OCI) DNS service?

Delegating an existing domain to Oracle Cloud Infrastructure (OCI) DNS is a standard process that involves updating the domain's authoritative nameservers. After creating a DNS zone for the domain within the OCI console, OCI provides a set of nameservers. The domain owner must then log into their domain registrar's self-service portal (the company where the domain was purchased) and replace the existing nameserver (NS) records with the ones provided by OCI. This action effectively delegates the responsibility for resolving DNS queries for that domain to the OCI DNS service.

A. While Oracle acquired Dyn, "retrieving" a domain via DYN is not the correct terminology or procedure for delegation. Delegation is an explicit update of NS records at the registrar.
C. FastConnect is an OCI service for establishing a dedicated, private network connection between a data center and OCI. It is unrelated to the public DNS delegation process.
D. A domain cannot be "self-delegated" from the DNS service it is being delegated to. The authority for delegation resides with the domain's registrar and the parent zone's nameservers.

1. Oracle Cloud Infrastructure Documentation, DNS, Zones: In the section "To add a zone," the documentation explicitly states the final step: "After you have created a zone and added records, you must delegate your domain to Oracle Cloud Infrastructure's nameservers. You can do this by logging into your domain registrar's web portal and replacing the current nameservers with the Oracle Cloud Infrastructure nameservers that were provided to you when you created the zone." (OCI Documentation, DNS, Managing Zones, Section: To add a zone).

2. Oracle Cloud Infrastructure Documentation, DNS, Overview: "To use Oracle Cloud Infrastructure DNS for a domain, you must delegate that domain to Oracle Cloud Infrastructure DNS nameservers. Delegation is the process of referring DNS queries for a domain to the nameservers that are authoritative for that domain. You delegate a domain from the domain's registrar." (OCI Documentation, DNS, Overview, Section: Delegation).