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Which accounts are affected, and in which direction, by the following business transaction? You estimate that one specific customer's account will not be collected in future, and you write it off. 1) Cash decreases 2) Bad debt expense decreases 3) Allowance for doubtful accounts decreases 4) Bad debt expense increases 5) Accounts receivable decreases 6) Cash increases 7) Accounts receivable increases 8) Allowance for doubtful accounts increases