Operation costing might most logically be used to determine the cost of all of the following products except perhaps:

1. mens and womens seasonal design sweaters
2. automobiles with different features such as seat cover material or radio quality
3. living-room sofas featuring leather or vinyl or fabric coverings by customer choice
4. standard dishwashing detergent with different house-brand marketing names sold to various store chains such as Walmart or Kroger or Migros
5. high-definition (HD) and surround-sound cables produced at several quality grades, and then sold to several different household electronics manufacturers to integrate into their systems