单项选择题

A.7.8%×9.5%×6.2%×4.9%
B.(7.8%×9.5%×6.2%×4.9%)-100%
C.(107.8%×109.5%×106.2%×104.9%)-100%
D.107.8%×109.5%×106.2%×104.9%