Refer to the diagram. All hosts have connectivity with one another. Which statements describe the addressing scheme that is in use in the network? （）

• A、The subnet mask in use is 255.255.255.192.
• B、The subnet mask in use is 255.255.255.128.
• C、The IP address 172.16.1.25 can be assigned to hosts in VLAN1
• D、The IP address 172.16.1.205 can be assigned to hosts in VLAN1
• E、The LAN interface of the router is configured with one IP address.
• F、The LAN interface of the router is configured with multiple IP addresses.