(The following information applies to the questions displayed below! Preble Company manufactures one product. Its variable manufacturing overhead is applied to production based on direct labor-hours and its standard cost card per unit is as follows Direct material: 5 pounds at $8.00 per pound Direct labor: 2 hours at $14 per hour Variable overhead: 2 hours at 35 per hour Total standard variable cost per unit $ 40,00 280 10.00 78.00 The company also established the following cost formulas for its selling expenses Vartable Fixed cost per cost per Month Untold Advertising $ 200,000 Soles salaries and commissions $100,000 $12.00 Shipping expenses 00 The planning budget for March was based on producing and selling 25 000 units However during March the company actually produced and sold 30.000 units and incurred the following costs Purchased 160.000 pounds of raw materials at a cost of $750 per pound All of this material was used in production b. Direct laborers worked 55,000 hours at a rate of $15.00 per Total Variable manufacturing overhead for the month was $280.500 CPV respectively susipping expenses were $210,000 $455,000, and $115,000, 7. What is the direct labor efficiency variance for March (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (ie, zero variance.). Input the amount as a positive value) Direct labor efficiency valanca