Required information [The following information itpplies to the questions dispiayed below] Preble Company manufactures one protuct. Its variable manuficturing overhead is applied to production based on dirnef labor-hours and its standard cost card per unit is as follows: The planning budget for March was based on producing and sealing 24.000 urits Howerver, ouring March the cortipany. actually produced and sold 30.600 units and incurred the following costs: a. Purchased 170.000 pounds of tow materials at a cost of $9.00 per pound, All of this muterial was used in production. b. Direct laboress worked 68,000 hours of a rote of \$1el per hour. c. Total variable manufacturing overhead for the itionth was \$512.040. A. What is the materiais quantity variance for March? (indicate the effect of each variance by selecting *f for favorable, "U" for unfavorabie, and "None" for no effect (l.e., Yero variance.), Input alf amounts as positive values.)