Squeaky Clean produces commercial strength cleansing supplies. Two of its main products are window cleanser that uses ammonia, and floor cleanser that uses bleach. Information for the most recent period follows: Window Cleaner Floor Cleaner Product Names (ammonia) (bleach) Direct materials information Standard ounces per unit 14 oz. 28 oz. Standard price (SP) per ounce $0.75 ? Actual quantity (AQ) used per unit 26 oz. 19 oz. Actual price (AP) paid for material $2.25 $0.90 Actual quantity purchased (AQP) and used 1,400 oz. 2,600 oz. Price variance ? $780 U Quantity variance $13,500 U Price variance Quantity variance Flexible budget variance Number of units produced What is the direct materials price variance for ammonia? ? $13,500 U ? 500 $780 U ? $3,000 F 700 O A. $19,500 unfavorable O B. $2,100 unfavorable OC. $2,100 favorable OD. $19,500 favorable