Auserneedsalaptopkeyboardreplacedbecausethespacebarisnotworking.Mike,atechnician,replacesthekeyboard,andnoticesthatadiagonalsetofkeyswillnotrespond. WhichofthefollowingistheMOSTlikelycause?()
A. StickyKeysisenabledandneedstobedisabled.
B. Thenewkeyboardisdefectiveandneedstobereplaced.
C. Thesystemboardisdefective.
D. Thekeyboardribbonisnotseatedproperly.