The relevant production range for Challenger Trailers, Inc. is between 120,000 units and 190,000 units per month. If the company produces beyond 190,000 units per month:. A. the fixed costs and the variable cost per unit will not change B. the fixed costs may change, but the variable cost per unit will remain the same C. the fixed costs will remain the same, but the variable cost per unit may change D. both the fixed costs and the variable cost per unit may change

 D. both the fixed costs and the variable cost per unit may change

Explanation:

It is said that Fixed costs do not change regardless of production level but this is not entirely true. Fixed costs usually do not change for a production range but if the range is passed, the fixed costs might then increase and a new fixed cost for the new relevant range will be charged.

Variable costs are variable because they change with production so if the company is producing more units, they will be incurring more variable costs.

In conclusion therefore, if the company produces more units than its relevant production range, it risks both fixed and variable costs changing.