单项选择题

A.(6004+100)÷(1+9%)×9%=504(元)
B.(6004+100)×9%=549.36(元)
C.6004÷(1+9%)×9%+100×9%=504.74(元)
D.6004×9%+100÷(1+9%)×9%=548.62(元)