If A is 3 × 4 matrix and B is a matrix such that A'B and BA' are both defined, ….

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If A is 3 × 4 matrix and B is a matrix such that A'B and BA' are both defined, then the order of B is

Options :-

1. 3 × 4
2. 3 × 3
3. 4 × 4
4. 4 × 3

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