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If A and B are 7 x 4 matrices, and C is a 8 X 7 matrix, which of the following are defined? OA. B

If A and B are 7 x 4 matrices, and C is a 8 X 7 matrix, which of the following are defined? OA. B - A OB. CB Oc. CB - A OD. BA DE. C - B

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