If A and B are two square matrices of the same order, then which of the following is true.

If A and B are two square matrices of the same order, then which of the following is true.

A
$(A B)' = A' B'$
B
$(A B)^{'} = B^{'} A^{'}$
C
$| A B | = 0 \Rightarrow | A | = 0$ and $| B | = 0$
D
none of these

Solution:

$(A B)^{'} = B^{'} A^{'}$

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