A：${\int }_0^2\left|x^2-1\right|dx$

B：$\left|{\int }_0^2\left(x^2-1\right)dx\right|$

C：${\int }_0^2\left(x^2-1\right)dx$

D：^{${\int }_0^1\left(x^2-1\right)dx+{\int }_1^2\left(1-x^2\right)dx$}