You save the configuration on a router with the copy unning$-$config startup$-$config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be$?$

Select one:

a$.$ The newly upgraded IOS is not compatible with the hardware of the router

b$.$ The configuration register setting is incorrect.

c$.$ You didn't boot the router with the correct command

d$.$ NVRAM is corrupted

e$.$ The configuration you save is not compatible with the hardware

Clear my choice

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