Assume that a company has two cost drivers-number of courses and number of students. The planned number of courses and students were 5 and 100, respectively. The actual number of courses and students were 6 and 110, respectively. One of the company's expenses is influenced by both cost drivers. Its cost formulas are $41 per course and $5 per student. The activity variance for this expense would be: Multiple Choice O $41 F. O $41 U. O $91 F. $91 U. O