If A=[ array ccc 0 & 3 & 4 -3 & 0 & 5 -4 & -5 & 0 array ] , then...

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1. A\mathrm{A}^2$is symmetric matrix with$\operatorname\det\left(\mathrm{A}^2\right)=0
2. B$A^2$ is symmetric matrix with $\operatorname\det\left(A^2\right) \neq 0$
3. C\mathrm{A}^2$is skew-symmetric matrix with$\operatorname\det\left(\mathrm{A}^2\right)=0
4. D$\mathrm{A}^2$ is skew-symmetric matrix with $\operatorname\det\left(\mathrm{A}^2\right) \neq 0$