Cho tam thức bậc hai h(x) bằng âm 4 x mũ 2 cộng 12x trừ

A. $-4x^2+12x-9<0\forall x\in R\backslash \left\{-3/2\right\}$

B. $-4x^2+12x-9>0\forall x\in R\backslash \left\{3/2\right\}$

C. $-4x^2+12x-9<0\forall x\in R\backslash \left\{3/2\right\}$

D. $-4x^2+12x-9>0\forall x\in R\backslash \left\{-3/2\right\}$