thE pArt oF thE BuilDing BElow 90th Floor ______.
A．rEmAinED whErE thEy wErE
B．CrACkED Down BECAusE oF thE Burning
C．wAs hAmmErED Down By thE FAlling uppEr pArt
D．wAs sAFE AFtEr thE AttACk