Perez Manufacturing Company established the following standard price and cost data: Sales price Variable manufacturing cost Fixed manufacturing cost Fixed selling and administrative cost $ 8.10 per unit $ 3.90 per unit $2,300 total $ 600 total Perez planned to produce and sell 2,300 units. Actual production and sales amounted to 2,500 units. Assume that the actual sales price is $7.90 per unit and that the actual variable cost is $4.25 per unit. The actual fixed manufacturing cost is $1,600, and the actual selling and administrative costs are $640. Required a.&b. Determine the flexible budget variances and classify the variances by selecting favorable (F) or unfavorable (U). (Select "None" if there is no effect (i.e., zero variance).) Flexible Budget Variances U U U Sales Variable manufacturing Contribution margin Fixed manufacturing Fixed selling and administrative cost Net Income (loss) U