Which of the following statement is 对 when referring to the five forces model?

A、Thoughpotentiallydetrimentaltotheprofitpotentialofanindustry,highlevelsofcompetitioncanbenefittheconsumerinanumberofways.
B、Wideexistenceofsubstituteswillincreaseboththepowerofsuppliersandtheattractivenessofmarket.
C、Ifthecustomerpurchaseslargevolumesofstandardizedproductsfromtheseller,buyerbargainingpowerislow.
D、Porter’sFiveForcesModellooksdeeplyintoacompanyandfindsoutproblemswithintheinternalorganization.