Youareworkingonadatabase,whereyouhavethreeredologgroups.Whenthedatabaseisdownfor
A.Theinstancestarts，thedatabaseismounted，buteffortstoopenthedatabasefail，andanerroraboutthemissingredologgroupisdisplayed.
B.Beforetheinstancestarts，youreceiveanerroraboutthemissingredologfilesofagroup.
C.Theinstancestartsandthedatabaseopenswithanerrormessagewrittentothealertlogfile.
D.Theinstancestartsandthedatabaseopensbecausetworedologgroupsstillexist.
E.Theinstancestartsandthedatabaseopens，buteveryattempttowritetoredologfilesfailswithanerror.
正确答案：参考A
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