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The following data are available for the most recent year of operations for Slacker \& Sons. The revenue portion of the sales activ variance is $387,000F. Required: a. How many units were actually sold in the most recent period? b. Prepare a sales activity variance for the most recent year for Slacker \& Sons. Complete this question by entering your answers in the tabs below. Prepare a sales activity variance for the most recent year for Slacker \& Sons. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Complete this question by entering your answers in the tabs below. How many units were actually sold in the most recent period? (Do not round intermediate calculations.) Prepare a sales activity variance for the most recent year for Slacker \& Sons. (Do not round intermediate calculations. Indicate the effect of each variance by selecting " F " for favorable, or "U" for unfavorable. If there is no effect, do not select either option.)