Let Ma n dN be two 3xx3 non singular ske...

Let `Ma n dN` be two `3xx3` non singular skew-symmetric matrices such that `M N=N M` If `P^T` denote the transpose of `P`, then `M^2N^2(M^TN)^(-1)(M N^(-1))^T` is equal to
a. `M^2`
b. `-N^2`
c. `-M^2`
d. `M N`

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