whiCh oF thE Following is thE most AppropriAtE titlE For thE pAssAgE
A．wAys to FlAttEn hiErArChiEs in A CompAny
B．skysCrApErs--toDAy AnD yEstErDAy
C．Birth oF thE grounDsCrApEr
D．thE pErFECt oFFiCE BuilDing