Which method can be used to convert a single-instance Oracle 12c Database to a RAC Database?

Which method can be used to convert a single-instance Oracle 12c Database to a RAC Database?

A.
using DBCA to migrate the database to shared storage and then start one or more RAC database instances on the cluster

B.
using DBCA to create a template from the single-instance database and then to create a RAC database on the cluster using that template

C.
using the rconfig utility to create a template from the single-instance database and then using DBCA to create a RAC database on the cluster using that template

D.
using the rconfig utility to migrate the database to shared storage and then using DBCA to start one or more RAC database instances on the cluster.

Explanation:

You can use the command-line utility rconfig to convert a single-instance database to an Oracle RAC database, or to convert it to an Oracle RAC One Node
database, depending on the values you provide in the ConvertToRAC.xml file.
Incorrect Answers:
A, B: To convert from a single-instance Oracle Database that is on a non-clustered computer to Oracle RAC, perform the procedures described in the following
sections, and in the order shown:
1. Use DBCA to Create an Image of the Single-Instance Database
2. Complete the Oracle Clusterware Installation
3. Validate the Cluster
4. Copy the Preconfigured Database Image
5. Install Oracle Database 12c Software with Oracle RAC
https://docs.oracle.com/database/121/RACAD/cvt2rac.htm#RACAD8854