thE pAssAgE is primArily ConCErnED with whiCh oF thE Following
A．EvAluAting two CompEting tEChnologiEs
B．trACing thE impACt oF A nEw tEChnology By nArrAting A sEquEnCE oF EvEnts
C．rEintErprEting An EvEnt From ContEmporAry BusinEss history
D．illustrAting A BusinEss strAtEgy By mEAns oF A CAsE history