If \( A \) is non-singular and \( (A-2 I)(A-4 I)=O \), then \( \frac{1}{6} A+\frac{4}{3} A^{-1}=...

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If \( A \) is non-singular and \( (A-2 I)(A-4 I)=O \), then \( \frac{1}{6} A+\frac{4}{3} A^{-1}= \)
(A) \( O \)
(B) \( I \)
(C) \( 2 I \)
(D) 61
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