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If the matrix B be the adjoint of the sq...

If the matrix B be the adjoint of the square matrix A , l be the identify matrix of the same order as A , and `k (ne 0)` be the value of the determinant of A , then AB is equal to

A

I

B

KI

C

`k^(2) I`

D

`(1//k) I`.

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The correct Answer is:
B
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