单项选择题

YouuseOSPFasyournetworkroutingprotocol.Youusethecommand……

You use OSPF as your network routing protocol. You use the command show ip route and you see several routes described as O，O IA，O E1，and O E2. What routes are in your area？（）

A.O IA
B.O E1
C.O E2
D.O

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