Refer to the exhibit, which shows a VPN topology. The device IP 10.1.100.40 downloads a file from the FTP server IP 192.168.4.50. Referring to the exhibit, what...

Refer to the exhibit, which shows a VPN topology.
The device IP 10.1.100.40 downloads a file from the FTP server IP 192.168.4.50.
Referring to the exhibit, what will be the traffic flow behavior if ADVPN is configured in this environment?

A. All the session traffic will pass through the Hub B. The TCP port 21 must be allowed on the NAT Device2 C. ADVPN is not supported when spokes are behind NAT D. Spoke1 will establish an ADVPN shortcut to Spoke2