which two stages are backups of the service configuration repository made?

At which two stages are backups of the service configuration repository made?

A.
during boot, after the early-manifest-import service finishes

B.
during boot, before the manifest-import service starts

C.
during manifest import, before the manifest-import service finishes

D.
during manifest import, after the manifest-import service finishes

E.
when a service is modified using the svccfg command

F.
after the last successful boot

G.
when the svcadm refresh command is executed

Explanation:
SMF Repository Backups
SMF automatically takes the following backups of the repository:
* The boot backup is taken immediately before the first change to the repository is made during
each system startup.
* (A, D) The manifest_import backups occur after svc:/system/early-manifest-import:default or
svc:/system/manifest-import:default completes, if the service imported any new manifests or ran
any upgrade scripts.
Note:
* The service configuration repository stores persistent configuration information as well as SMF
runtime data for services. The repository is distributed among local memory and local files.