Which of the following is true for matrix \[AB\] [RPET 2003]

1.	Which of the following is true for matrix \[AB\] [RPET 2003]
A.	\[{{(AB)}^{-1}}={{A}^{-1}}{{B}^{-1}}\]
B.	\[{{(AB)}^{-1}}={{B}^{-1}}{{A}^{-1}}\]
C.	\[AB=BA\]
D.	All of these
Answer» C. \[AB=BA\]

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Which of the following is true for matrix \[AB\] [RPET 2003]

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