XYZ Company incurred the following costs for the month of August when it observed an activity level of 5,000 units: Variable costs $32.500: Fixed costs $25.000; Mixed costs $21.500: Total costs 579.000. During October, the activity level was 16,000 units, and the total costs incurred were $178.000. If the activity level were expected to be 16,000 units for the month of December, what amount of total costs would be ?expected a $151,000 0 b. 5160,000. O c. $169,000 @ d. None of the answers given O e. $178.000