Route redistribution (RR) has become an integral part of IP network design as the res ult of a growing need for disseminating certain routes across routing protocol boundaries. By default, which description is true when redistributing routes from other routing protocols into OSPF?（）

• A、Summarized routes are unacceptable
• B、They will appe ar in the OSPF routing table as type E2 routes
• C、Only routes with lower administrative distances will be imported
• D、All imported routes are to be automatically summarized if possible