Which two statements about Cisco IOS XE operations are true? (Choose two.)

A.
Cisco IOS XE uses a two-stage configuration method.

B.
Using the commit global configuration command, all the committed changes will be
persistent across reboots.

C.
The copy run start command makes the configuration changes persistent across reboots.

D.
The erase start command followed by the reboot command brings up the router without
any configurations.

E.
There is no concept of a startup-config in Cisco IOS XE.