Which three statements are possible causes for the "fltAdaptorHostIfLink-down" fault in UCS Manager？ （）

• A、 The fabric interconnect is in the end-host mode， and all uplink ports have failed.
• B、 The server port to which the adapter is pinned has failed.
• C、 A transient error has caused the link to fail.
• D、 The fabric interconnect is in the switch mode， and all uplink ports have failed.
• E、 The link for a network-facing host interface is missing.