已知 f(x)f\left( x\right)f(x) 是定义在 R\mathbf{R}R 上的奇函数,且当 x>0x > 0x>0 时, f(x)=(x2−3)ex+2f\left( x\right) = \left( {{x}^{2} - 3}\right) {\mathrm{e}}^{x} + 2f(x)=(x2−3)ex+2 ,则 ( )A. f(0)=0f\left( 0\right) = 0f(0)=0 B. 当 x<0x < 0x<0 时, f(x)=−(x2−3)e−x−2f\left( x\right) = - \left( {{x}^{2} - 3}\right) {\mathrm{e}}^{-x} - 2f(x)=−(x2−3)e−x−2C. f(x)≥2f\left( x\right) \geq 2f(x)≥2 当且仅当 x≥3x \geq \sqrt{3}x≥3 D. x=−1x = - 1x=−1 是 f(x)f\left( x\right)f(x) 的极大值点