A Network Administrator Is Considering Placing a Firewall on an Internal

A network administrator is considering placing a firewall on an internal file server in the network.What is the purpose of the firewall,and is it important for the firewall to be stateful?

A) The purpose of the firewall is to hide the file server from the outside but still allow traffic to pass to the outside and back. The firewall must be stateful so that it keeps track of data packet flow.
B) The purpose of the firewall is to protect the file server from the outside but still allow traffic to pass to the outside and back. The firewall should not be stateful unless the file server is not secure.
C) The purpose of the firewall is to protect the file server from the outside but still allow traffic to pass to the outside and back. The firewall must be stateful so that it keeps track of data packet flow.
D) The purpose of the firewall is to hide the file server from the inside but allow traffic to pass to the outside. The firewall must be stateful so that it keeps track of data packet flow.