A-Zone Media sells two models of e-readers. The budgeted price per unit for the wireless model is $202 and the budgeted price per unit for the wireless and cellular model is $436. The master budget called for sales of 11,000 wireless models and 3,000 wireless and cellular models during the current year. Actual results showed sales of 8,500 wireless models, with a price of $250 per unit, and 4,600 wireless and cellular models, with a price of $600 per unit. The standard variable cost per unit is $90 for a wireless model and $210 for a wireless and cellular model. Required: a. Compute the activity variance for these data. b. Compute the mix and quantity variance for these data (Enter your answers rounded to the nearest whole dollar.) Complete this question by entering your answers in the tabs below. Required A Required B Compute the mix and quantity variance for these data. (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)