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