Which of the following is true? Overhead costs are often affected by many issues and are frequently too complex to be explained by any one factor. The departmental overhead rate is not usually based on measures closely related to production volume. The departmental overhead rate is most accurate is assigning overhead costs that are not driven by production volume. Allocated overhead costs will be the same no matter which allocation method is used. When cost analysts are able to logically trace cost objects to cost, costing accuracy is improved