You want to minimize the number of IP addresses and subnets in use. How should you
configure your tunnel interface?

A.
Configure the tunnel interface with an IP address with a 32 bit subnet mask

B.
Configure the tunnel interface with an IP address with a 30 bit subnet mask

C.
Configure the tunnel interface as unnumbered and place the interface in the same zone
as the designated interface

D.
Configure the tunnel interface as unnumbered, but place the tunnel interface in a different
zone than the designated interface