The following data are available for the most recent year of operations for Prest Products. The revenue portion of the sales activity variance is $250,500U. 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 Prest Products. Complete this question by entering your answers in the tabs below. How many units were actually sold in the most recent period? Prepare a sales activity variance for the most recent year for Prest Products. (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.)