化简比的依据是请选择ABC*d;W4{,I'}:?1P:}0s.d/R:[1_.W
A.比的意义'}:?1P:}0s.d/R:[1_.W
B.比的基本性质'}:?1P:}0s.d/R:[1_.W
C.分数的基本性质'}:?1P:}0s.d/R:[1_.W