For a router to successfully redistribute routes between OSPF and EIGRP, which of the following are true?（）

• A、The router must have one routing protocol configured, but configuration for both routing protocols is not necessary
• B、The router must hav e at least one working link connected to each routing domain
• C、The redistribute command must be configured under EIGRP to send the routes to OSPF
• D、The redistribute command should be configured under OSPF to take routes from EIGRP into OSPF