The standard cost sheet for Chambers Company, which manufactures one product, follows S 80 100 80 Direct materials, 40 yards at $2.00 per yard Direct labor, 5 hours at $20 per hour Factory overhead applied at 80% of direct labor (variable costs- $60;fixed costs-$20) Variable selling and administrative Fixed selling and administrative 64 40 S 364 Total unit costs Standards have been computed based on a master budget activity level of 28,800 direct labor-hours per month. Actual activity for the past month was as follows: Materials used Direct labor Total factory overhead Production 228,000 yards at $2.05 per yarod 25,200 hours at $20.40 per hour $444,000 5,000 units Required Compute variance analyses for the variable and fixed costs. Materials are purchased as they are used. (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.)