【单选题】After working all night and successfully configuring a Cisco router for the Ezonexam network you save your changes on the startup config, reboot the router, and go out for a cigarette. When you return...
A.
Hardware failure in NVRAM prevents the router from loading the config
B.
Startup-config in flash is corrupt and cannot be analyzed
C.
Router configuration-register set to bypass startup configuration
D.
Startup-config in NVRAM is corrupt and cannot be analyzed