Which of these is the statement of the zero product rule? A. If a • b = 0, then either a = 0 or b = 0, but not both. B. If a • b = 0, then a = 0 and b = 0. C. If a • b = 0, then a = 0. D. If a • b = 0, then either a = 0 or b = 0, or both.
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