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If \( \mathrm{A}=\frac{1}{\pi}\left[\begin{array}{cc}\sin ^{-1}(x \pi) & \tan ^{-1}\left(\frac{x}{\pi}\right) \\ \sin ^{-1}\left(\frac{x}{\pi}\right) & \cot ^{-1}(\pi x)\end{array}\right], \mathrm{B}=\frac{1}{\pi}\left[\begin{array}{cc}-\cos ^{-1}(x \pi) & \tan ^{-1}\left(\frac{x}{\pi}\right) \\ \sin ^{-1}\left(\frac{x}{\pi}\right) & -\tan ^{-1}(\pi x)\end{array}\right] \), then
P
W \( A-B \) is equal to
(A) I
(B) \( \mathrm{O} \)
(C) \( 2 \mathrm{I} \)
(D) \( \frac{1}{2} \mathrm{I} \)
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