If \( y=\frac{\sqrt{x^{2}-4}}{\cos ^{-1}(2-x)} \), then the domain ...

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If \( y=\frac{\sqrt{x^{2}-4}}{\cos ^{-1}(2-x)} \), then the domain of \( y \) is :
\( \mathrm{P} \)
(A) \( [-2,3] \)
(B) \( [1,2] \)
(C) \( [2,3] \)
(D) \( [-2,2] \)
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