AnEntErprisE REsourCE PlAnningERP)is Built upon A CommErCiAl ______ thAt promisEs thE sEAmlEss intEgrAtion oF All thE inFormAtion Flowing through thE CompAny——FinAnCiAl, ACCounting, humAn rEsourCEs, supply ChAin AnD CustomEr inFormAtion.
A、mAnAgEmEmt systEm B．opErAting systEm
C．soFtwArE pACkAgE
D、miDDlEwArE