The standard cost sheet for Chambers Company, which manufactures one product, follows Direct materials, 40 yards at $3.00 per yard 120 Direct labor, 4 hours at $25 per hour Factory overhead applied at 80% of direct labor 80 (variable costs-$60; fixed costs$20) Variable selling and administrative Fixed selling and administrative 100 82 58 440 Total unit costs Standards have been computed based on a master budget activity level of 30,600 direct labor-hours per month. Actual activity for the past month was as follows Materials used Direct labor Total factory overhead Production 246,000 yards at $3.20 per yard 25,000 hours at $28.00 per hour $620,000 5,800 units Required Prepare variance analyses for the variable and fixed costs. Materials are purchased as they are used. (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.) Direct materials: Price variance Efficiency variance Direct labor Price variance Efficiency variance Variable overhead: Efficiency variance Fixed overhead Production volume variance