Answer:
c) Total manufacturing costs will increase and unit manufacturing costs will also decrease.
Explanation:
Based on the information given the most likely behavior of total manufacturing costs and unit manufacturing costs, given this change is that TOTAL MANUFACTURING COSTS WILL INCREASE AND UNIT MANUFACTURING COSTS WILL DECREASE since Manufacturing cost consists of DIRECT MATERIALS, DIRECT LABOR, VARIABLE MANUFACTURING OVERHEAD and FIXED MANUFACTURING OVERHEAD in which direct materials, direct labor and variable manufacturing overhead are Variable expense which means that if the production increases from $40,000 to $45,000 the total manufacturing cost will as well INCREASE but due to the FIXED MANUFACTURING COST involved , the unit manufacturing cost will have to decrease.