单项选择题
A.10 B.50 C.25 D.5
A.①② B.①③ C.②④ D.①③④
A.(41.44×7.793%×100)×(1+20%)/(1-15%) B.(41.44×7.793%×100)×(1+20%)×(1-15%) C.(41.44×7.793%×100)×(1-15%)/(1+20%) D.(41.44×7.793%×100)×(1+20%)/(1+15%)