Refer to the exhibit.

What statement is true of the configuration for this network?

A.
The configuration that is shown provides inadequate outside address space for translation
of the number of inside addresses that are supported.

B.
Because of the addressing on interface FastEthernet0/1, the Serial0/0 interface address
will not support the NAT configuration as shown.

C.
The number 1 referred to in the ip nat inside source command references access-list
number 1.

D.
ExternalRouter must be configured with static routes to networks 172.16.1.0/24 and
172.16.2.0/24.

Explanation:
The “list 1″ refers to the access-list number 1.