What would the Salesforce architect recommend for this migration?

Universal Containers (UC) uses a managed package to install an internal Sales app in five orgs. Within each org there are integrations and local processes with the objects of the managed package. UC wants to use unlocked packages for better integration with CI/CD processes.

What would the Salesforce architect recommend for this migration?
A . Export all data from objects/fields of the managed package, uninstall it, install the unlocked package with the same namespace as the Managed package and restore all data.
B. Export all data from objects/fields of the managed package, uninstall it, install the unlocked package without namespace and restore all data.
C. Do not change to unlocked package as it is possible to perform all CI/CD processes with the managed package.
D. Migrate all classes, Visualforce, and components from the managed package to the unlocked package. Install the new version of the managed package (objects/fields only) and the unlocked package with the other components.

Answer: A