YourdatabaseisopenandrunninginARCHIVELOGmode.YoutakeRMANfullbackupseverySundaynight.OnMondaymorning，whilequeryingtheuser1.employeestable，youreceivethefollowingerrormessage：

01578：ORACLEdatablockcorrupted（file5，block51）ORA-01110：datafile5： ’/u01/app/oracle/oradata/orcl/example01.dbf’ Youneedtorectifythecorruptionwhileensuringthefollowing：Thedatafileshouldremainonline. Themeantimetorecover（MTTR）shouldbeminimal. Youarenotusingabackupcontrolfile，andallthearchivedlogsareaccessible. Whichoptionwouldyouchoose？（）