Process OSPF 1 is redistributing routes from process OSPF 2. Which of the following methods may be used to set the metrics of the redistributed routes?（）
- A Let the metrics default.
- B Use each redistributed route's OSPF metric using the redistribute command's metric transparent keywords.
- C Set the metric using the default - metric router subcommand.
- D Redistribution is not allowed between two OSPF p rocesses.