Monster Company produces a product requiring 3 direct labor hours at $16.00 per hour. During January, 2,000 products are produced using 6,300 direct labor hours. Monster's actual payroll during January was $98,280. What is the labor quantity variance? Select one: a. $4,800 unfavorable b. $2,280 unfavorable c. $4,800 favorable d. $2,520 favorable.