What does the following iptables rule accomplish:
iptables A INPUT s !127.0.0.0/8 p tcp dport 111 j DROP
A. Drops all packets from the LAN destined for port 111.
B. Drops all packets originating from the local machine unless they are destined for port 111.
C. Drops all packets destined for port 111 which originate from the local machine.
D. Drops all packets destined for port 111 unless they are from the local machine.
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