Tilley Professional Services is composed of two separate divisions: (1) tax services as provided by the tax department and (2) auditing services as provided by the audit department. Each department has numerous clients. Engagement with each individual client is a separate service (i.e., product) and each department has several engagements in each period. Cost items of the firm follow: Salary of the partner in charge of the audit department Salary of the managing partner of the firm Cost of office supplies such as paper, pencils, erasers, etc. Depreciation of computers used in the tax department License fees of the firm Professional labor for a tax engagement Office assistant labor supporting both departments Professional labor for an audit engagement Depreciation of computers used in the audit department Salary of the partner in charge of the tax department Travel expenditures for an audit engagement Required Page 194 a. Identify each cost as being a direct or indirect cost assuming the cost objects are the individual engagements (audit engagements or tax engagements). b. Identify each cost as being a direct or indirect cost assuming the cost objects are the two departments. c. Identify each cost as being a direct or indirect cost assuming the cost object is Tilley Professional Services as a whole