【名词&注释】
供应商(supplier)、战略伙伴关系(strategic partnership)、交易所交易(transaction on exchange)、制造品(manufactured materials)、总支出(aggregate expenditure)
[单选题]帕累托法则是采购物品分类的基础,它指出()的采购物品可能会占到总支出(aggregate expenditure)的()
A. 30%,70%
B. 60%,40%
C. 20%,80%
D. 50%,50%