If A=(3−4−43)A = \begin{pmatrix} 3 & -4 \\ -4 & 3 \end{pmatrix}A=(3−4−43) and B=ATB = A^TB=AT, which statement is true?
A≠BA \neq BA=B and AB=IAB = IAB=I
A=BA = BA=B (symmetric)
BBB has negative diagonal elements
det(B)=−25\det(B) = -25det(B)=−25