AUniversitycustomerhasaBladeCenterHfullypopulatedwithLS21Blades,asingleAMM,andfourpowermodules.TheBladeCenterhasbeenrunningflawlesslyforthreemonths.Onedayanadministratordiscoversthattheycannotviewvideoonblades9-12eitherlocallyorremotelyeventhoughtheystillappeartoberunning.Thevideoworksonalloftheotherblades.Whichofthefollowingisthecauseofthevideoproblem?()
Apowermodulehasfailedandthereisnotenoughpowertoseevideoonallblades.
B. MUX3ontheBladeCenterbackplanehasfailed.
C. AfirmwareupdateisrequiredontheAMM.
D. AsecondAMMisrequiredtoviewvideoonblades9-14.