A. Update the network ACL that is attached to the subnet that is associated with the EC2 instance. Add a Deny statement for the port and the source IP addresses.
B. Update the elastic network interface security group that is attached to the EC2 instance to remove the port from the inbound rule list.
C. Update the elastic network interface security group that is attached to the EC2 instance by adding a Deny entry in the inbound list for the port and the source IP addresses.
D. Create a new network ACL for the subnet. Deny all traffic from the EC2 instance to prevent data from being removed.

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