Following are utilities costs for different level of machine hours: $450 for 10 hours: $540 for 12 hours ; $630 for 14 hours $720 for 16 hours. This cost is best described as Select one: a. None of the answers given b. Variable c. Direct d. Fixed e. Mixed XYZ Company uses the high low method to analyze the mixed cost. According to the cost formula derived, the total fixed cost is $10,000. Total cost at the high level of activity was $82,000 and at the low level of activity was $25,000. If the low level of activity was 2,500 units, what was the high level of activity in units? Select one: a. 8,200 b. 11,000 c. None of the answers given d. 11,500 e. 12,000