Which of the following is true about Stateful Inspection?

Stateful Inspection tracks state using two tables, one for incoming traffic and one for outgoing traffic

Stateful Inspection looks at both the headers of packets, as well as deeply examining their content.

Stateful Inspection requires that a server reply to a request, in order to track a connection's state

Stateful Inspection requires two rules, one for outgoing traffic and one for incoming traffic.