Let A� and B� be matrices. Select all items below that apply. A. If A� and B� are row equivalent, then their row spaces must be the same. B. If A� and B� are row equivalent, then their column spaces must be the same. C. If A� and B� have the same rank, then their column spaces are the same. D. If A� and B� are row equivalent, then their null spaces must be the same. E. If A� and B� are row equivalent, then their column spaces must have the same dimension.

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