Marc is a Security Administrator configuring a VPN tunnel between his site and a partner site. He just created the partner city’s firewall object and a community. While trying to add the firewalls to the community only his firewall could be chosen. The partner city’s firewall does not appear. What is a possible reason for the problem?
A.
IPsec VPN Software Blade on the partner city’s firewall object is not activated.
B.
The partner city’s firewall object was created as an interoperable device.
C.
The partner city’s Gateway is running VPN-1 NG AI.
D.
Only Check Point Gateways could be added to a community.