Whichi of the following about the default route is correct? (Multiple Choice)

Whichi of the following about the default route is correct? (Multiple Choice)
A . The default route can only be manually configured by the administrator.
B . In the routing table, the default route appears as a route to the network 0.0.0.0 (the mask is also 0.0.0.0)
C . There must be a default route in the routing table of any router.
D . If the destination address of the packet cannot match any destination address of the routing table, the packet will be forwarded by selecting the default route.

Answer: BD