Multiple-choice question, please solve quickly

Question 5 Not yet answered Marked out of 1 P Flag question Garith Co. employs 20 individuals. Eight employees are paid $18 per hour and the rest twelve employees are salaried employees paid $3,000 per month. How would total costs of employees be classified? a. a variable cost within a relevant range b. mixed O c. variable O d. a fixed cost within a relevant range