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Find the incorrect statement:...

Find the incorrect statement:

A

For a given matrix `A = (a_(ij))_(3xx3)` det A= |A|=`a_(11)A_(11)+a_(12)A_(12)+a_(13)A_(13)` where`A_(ij)` is the cofactor of `a_(ij)`

B

If r rows (columns) are identical in a determinant of order `n ge r`, when we put x=a then `(x-a)^(r)` is a factor of |A|.

C

In matrices, although AB `ne`BA in general, we do have `|AB| =|BA|.

D

A square matrix A is said to be non singular if |A|`ne`0.

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The correct Answer is:
B
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