McBiley Publishers produces textbooks for colleges and universities. The standard direct labor quantity per textbook is 0.5 direct labor hours and the standard direct labor rate is $14 per hour. Last month, 150,000 textbooks were produced and 73,500 actual direct labor hours were worked. The company's direct labor payroll for last month was $977,550. What was the total direct labor variance? $21,000 favorable O $72,450 favorable $71,001 favorable O $51,450 favorable