A network administrator is tasked to block all outbound SSH connections on the default port from a network
subnet of 10.152.8.0/21 on a Linux based firewall. Which of the following rule sets would accomplish this task?

A.
iptables -i OUTPUT -d 10.152.8.0/21 -p TCP –dport 22 -j REJECT

B.
iptables -i OUTPUT -d 10.152.8.0/21 -p TCP –dport 23 -j REJECT

C.
iptables -i OUTPUT -d 10.152.8.0/21 -p TCP –dport 22 -j ACCEPT

D.
iptables -i OUTPUT -d 10.152.8.0/21 -p TCP –dport 23 -j ACCEPT