Gary Assembles an ACL for His Cisco Router That Looks

Gary assembles an ACL for his Cisco router that looks something like this:
Access-list 111 deny ip 10.0.0.0 0.255.255.255 any
Access-list 111 deny ip 172.16.0.0 0.15.255.255 any
Access-list 111 deny ip 192.168.0.0 0.0.255.255 any
Access-list 111 deny ip 127.0.0.1 0.255.255.255 any
Access-list 111 deny ip 224.0.0.0 31.255.255.255 any
Access-list 111 deny ip host 0.0.0.0 any
The list is applied to an outside interface. What is this list trying to accomplish?

A) Defining private IPs
B) Defining internal networks
C) Anti-NAT attacks
D) Anti-spoofing