21. The following data for a pottery company pertain to the production of 2,000 clay pots during July. Direct Materials (all materials purchased were used): Standard cost: $6.00 per kilogram of clay Total actual cost: $11,200 Standard cost allowed for units produced was $12,000 Materials efficiency variance was $240 unfavourable Direct Manufacturing Labour: Standard cost is 2 pots per hour at $24.00 per hour Actual cost per hour was $24.50 Actual labour was 972 hours What is the standard direct material amount per pot? A 1.00 kilogram B 1.88 kilograms C 2.12 kilograms D 3.00 kilograms E 4.00 kilograms