Cox Company's direct material costs for the month of January were as follows: Actual quantity purchased 18,000 kilograms Actual unit purchase price $3.50 per kilogram Materials price variance--unfavourable (based on purchases) $3,600 Standard quantity allowed for actual production 16,000 kilograms Actual quantity used 15,000 kilograms For January there was a favourable direct material quantity variance of? $3,360. $3,375. $3,300. $3,800