From pArAgrAph 4 wE CAn inFEr thAt ______.
A．thE inCrEAsing ConCEntrAtion is CErtAin to hurt ConsumErs
B．worlD Com sErvEs As A gooD ExAmplE oF Both BEnEFits AnD Costs
C．thE Costs oF thE gloBAlizAtion proCEss ArE Enormous
D．thE stAnDArD oil trust might hAvE thrEAtEnED CompEtition