单项选择题
A.sales.B.total liabilities.C.total interest-bearing debt.
A.lower EBITDA/Interest ratio.B.lower dividends-to-total-debt ratio.C.higher five year average of its coefficient of variation of its operating margin.
A.经济关系B.利益关系C.财产关系D.人身关系E.婚姻家庭关系