Indicate whether the following costs are considered a unit activity, batch activity, product activity customer activity or organizational activity: Lighting and heating the company's production facility b. Direct labor workers assemble a product c. Do rough milling work on products Interview and process new employees in the d. ersonnel department. e. |Design new ucts Perform periodic preventive maintenance on general use equipment. Products are designed by en Setting up the CD duplicating machine to make gineers h. i. Preparation of quarterly financial reports copies from a particular master CD. Visually inspecting CDs and placing them by han into protective plastic cases prior to shippin Sales representatives periodic visits to customers to k.keep them informed about the services provided by CD Express I. Monthly bills are sent out to reqular customers m, Equipment is set u