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(3pts) Determine whether the following argument is correct: Let r E ACUB . Then r E A or r E B. This means r @

(3pts) Determine whether the following argument is correct: Let r E ACUB . Then r E A" or r E B". This means r @ A orr @ B. Since x @ A or re B, re AU B. Therefore IE (AUB). Hence AcU BC (AUB). If it is incorrect, explain the error

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