A router has been configured with the commands router os pf 9, network 172.16.1.0 0.0.0.255 area 8, and network 172.16.0.0 0.0.255.255 area 9, in that order. No other OSPF -related commands have been configured. The answers list the IP addresses that could be assigned to this router's Fa0/0 interface. Which an swers list an IP address/prefix length that would cause the router to put Fa0/0 into area 9?（）

• A、172.16.0.1/23
• B、172.16.1.1/26
• C、172.16.1.1/24
• D、172.16.0.255/23
• E、None of the other answers is correct.