Find the values of the missing items. Assume that the actual sales volume equals actual production volume. (There are no inventory level changes.) (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.) Reported Income Statement (2,400 units) $ 120,000 Manufacturing Variance Marketing and Administrative Variance Sales Price Variance Flexible Budget (2,400 units) $ 129,600 Sales Activity Variance Master Budget (2,600 units) Sales revenue $ 3,840 F 2,980 F Variable manufacturing costs Variable marketing and administrative costs Contribution margin 15,600 $ 75,580