If k is a scalar and I is a unit matrix of order 3, then \[adj(k\,I)=\] [MP PET 1991; Pb. CET 2003]

If k is a scalar and I is a unit matrix of order 3, then \[adj(k\,

1.	If k is a scalar and I is a unit matrix of order 3, then \[adj(k\,I)=\] [MP PET 1991; Pb. CET 2003]
A.	\[{{k}^{3}}I\]
B.	\[{{k}^{2}}I\]
C.	\[-{{k}^{3}}I\]
D.	\[-{{k}^{2}}I\]
Answer» C. \[-{{k}^{3}}I\]

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If k is a scalar and I is a unit matrix of order 3, then \[adj(k\,I)=\] [MP PET 1991; Pb. CET 2003]

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