Product cost is determined in a simple activity-based in which of the following way? Select one: a direct material, direct labour, manufacturing overhead and non-manufacturing overhead are assigned to products on an activity basis. O b. direct material is traced using a conventional approach, while direct labour, manufacturing overhead and non- manufacturing overhead are assigned to products on an activity basis. O c. None of the other answers are correct. O d. direct material, direct labour and manufacturing overhead are traced using a conventional approach, and non- manufacturing overhead is assigned on an activity basis. e none of the above are true