The Armstrong Corporation developed a flexible budget for its production process. Armstrong budgeted to use 12.000 pounds of direct material with a standard cost of S1000 por pound to produce 11.000 units of finished product. Armstrong actually purchased 18,000 pounds and used 13,000 pounds of direct material with a cost of $25.00 por pound to produco 11,000 units of finished product Given these results, what is Armstrong's direct material quantity variance? O A $10,000 unfavorable OB 560,000 favorable OC. $60,000 unfavorable OD. $10,000 favorable