What would explain this behavior?

You configured an aggregate route of 192.168.8.0/21 and committed the updated configuration. Using an operational show command, you notice that the newly configured route is not present in the output.

What would explain this behavior?
A . There are no active contributing routes.
B . The next hop is not resolvable.
C . The next hop is not reachable.
D . An aggregate route will not show up in the local table; it will be shared only with BGP neighbors.

Answer: A