What does the following access list, which is applied on the external interface FastEthernet 1/0 of the perimeter router accomplish.

What does the following access list, which is applied on the external interface FastEthernet 1/0 of the perimeter router accomplish.
# access-list 101 deny ip 10.0.0.0 0.255.255.255.255 any log
# access-list 101 deny ip 192.168.0.0 0.0.255.255 any log
# access-list 101 deny ip 172.16.0.0 0.15.255.255 any log
# access-list 101 permit ip any any
# interface fastEthernet 1/10
# ip access-group 101 in
A. It filter incoming traffic from private address in order to prevent spoofing and logs any intrusion attempts
B. It prevents private internal address to be accessed directly from outside
C. It filters incoming traffic from private address ranges 10.0.0.0-10.0.0.255, 172.16.0.0-172.31.255.255, 192.168.0.0-192.168.255.255 and logs any intrusion attempts
D. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the internet