单项选择题

A.利息收入/(贷款日均+投资日均+同业往来日均+买入返售资产日均+央行往来日均)*100%
B.利息收入/(贷款日均+同业往来日均+买入返售资产日均+央行往来日均)*100%
C.利息收入/(贷款日均+投资日均+买入返售资产日均+央行往来日均)*100%
D.利息收入/(贷款日均+投资日均+同业往来日均+买入返售资产日均)*100%