What is the best explanation for the variances between actual costs and estimated costs. (For this purpose, assume that the additional meters of material used in the job were spoiled, the factory overhead rate has proven to be satisfactory, and an inexperienced employee performed the work.) The direct materials cost exceeded the estimate by $280 because 8 meters of materials were spoiled. The direct labor cost exceeded the estimate by $80 because an additional 4 hours of labor were used by an inexperienced employee. The factory overhead cost exceeded the estimate because an additional $60 of factory overhead was allocated because of the increase in direct labor. Management didn't provide enough direction to complete tasks on budget. The direct materials cost exceeded the estimate by $75 because 3 meters of materials were spoiled. The direct labor cost exceeded the estimate by $120 because an additional 4 hours of labor were used by an inexperienced employee. Select the correct answer from the above choices.