A.0.80% B.0.60% C.0.40% D.1.00%
A.0.10% B.0.30% C.0.50% D.0.70%
A.一個百分點(diǎn) B.二個百分點(diǎn) C.三個百分點(diǎn) D.四個百分點(diǎn)