A. 5.6%×7.1%×8.5%×6.4% B. (105.6%×107.1%×108.5%×106.4%)-100% C. (5.6%×7.1%×8.5%×6.4%)100% D. 105.6%×107.1%×108.5%×106.4%
A. 正确 B. 错误