A router has been configured with the commands router eigrp 9 and network 72.16.1.0 0.0.0.255. No other EIGRP - related commands have been configured. The nswers list the IP addresses that could be assigned to this router's Fa0/0 interface. Which answers list an IP address/prefix length that would cause the router to enable IGRP on Fa0/0?（）

• 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.