A hotel's VP would like to replace the hotel's old computers with state of the art flat panel displays. The new displays would take less space, consume less power, and provide more security than the old terminals. The new computers would NOT need new wiring. The hotel's chef believes the funds would be better spent on a new bulk freezer for the kitchen.

For each of the items, determine if it should be considered a differential cost, an opportunity cost, or a sunk cost in the decision to replace the old computers with the new flat-panels. If none apply leave it blank.

These are the 8 and my guesses
Cost of new flat-panel displays - Differential
Cost of old computers - Sunk
Rent on space taken up by registration desk - N/A
Wages of desk personnel - N/A
Benefits from a new freezer - opportunity
Costs of maintaining the old computers - ????
Cost of removing the old computers - Differential
Cost of existing registration desk wiring - ????