Pixar Corporation conducts get rich quick workshops and uses two measures of activity, number of classes and number of students, in the cost formulas in its reports. The cost formula for the workshops is $490 per month plus $109 per class plus $29 per student. expected its activity in November to be 19 classes and 129 students, but the actual activity was 12 classes and 112 students. The actual cost for the workshops in November was $5,630. What was spending variance for workshops in November? Choices: A)584 U

B)584 F

C)672 F

D) 672 U