Turtlemax manufactures heavy mining equipment, including many different models of drilling rigs. The company uses a life cycle costing approach to estimate the cost of a new model of drilling rigs, DRig2522. Which of the following costs should be included in the life cycle cost of this new model of drilling rig? i. Direct labour costs associated with producing a unit of DRig2522. ii. Costs of producing a blueprint that specifies the various functions and settings of DRig2522. iii. Costs of market research to determine the overall market demand of drilling rigs in Australia. iv. Costs of customer support for DRig2522 during this product's warranty period. a. i, ii and iv only Ob. i, ii and iii only O c. ii and iii only d. ii, iii and iv only e. i, ii, iii and iv