Assembly line workers at Thompson Manufacturing worked a total of 12.000 direct labor hours to produce 36,000 units, The standard for producing one unit is 15 minutes at a wage rate of $10.70. If the actual wage rate was $10.50 per direct labor hour, Thompson's direct labor rate variance is $2.400 favorable $4,800 unfavorable $9,450 favorable $4,500 unfavorable