A network technician has been notified that several PCs are infected and are sending spam emails. The technician wants to add a rule to the firewall to prevent the sending of emails from the internal network. Which of the following rules will prevent this?

A.
Deny TCP port 25 outbound

B.
Deny UDP port 53 outbound

C.
Deny TCP port 110 outbound

D.
Deny UDP port 213 outbound