Which statement describes a stateful firewall?

Which statement describes a stateful firewall?

• It can filter packets based on information at Layers 3, 4, 5 and 7 of the OSI reference model.
• It can determine if the connection is in the initiation, data transfer, or termination phase.
• It can only filter packets based on limited Layer 3 and 4 information.
• It can expand the number of IP addresses available and can hide network addressing design.