The standard cost sheet for Chambers Company, which manufactures one product, follows: $ 75 18e Direct materials, 30 yards at $2.58 per yard Direct labor, 4 hours at $25 per hour Factory overhead applied at 80% of direct labor (variable costs = $69; fixed costs = $20) Variable selling and administrative Fixed selling and administrative Total unit costs 80 67 43 $365 Standards have been computed based on a master budget activity level of 29.100 direct labor-hours per month. Actual activity for the past month was as follows: Materials used Direct labor Total factory overhead Production 231,200 yards at $2.68 per yard 28,992 hours at $26.00 per hour $670,000 7,100 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 verlance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select elther option.) Direct materials: Price variance Efficiency variance Direct labor Price variance Efficiency variance Variable overhead: Efficiency variance Fixed overhead: Production volume variance