Let matrix B be the adjoint of a square matrix A, l be the identity matrix of same order as A. If k(\neq0) is the determinant of the matrix A, then what is AB equal to? [NDA II 2018]

NDA Math Determinants

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Let matrix B be the adjoint of a square matrix A, l be the identity matrix of same order as A. If k(≠0) is the determinant of the matrix A, then what is AB equal to?

[NDA II 2018]

l
kl
k2l
(
1
k
)l

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