Consider the following costs and decision-making situations:

I. The purchase price of new equipment, in a keep vs. disposal decision.

II. the remodeling cost of existing office space, in a firm's decision to stay at its current location or move to a new building.

III. The salary of a supervisor who will be laid off, in a department-closure decision.

Which of the above costs is (are) relevant to the decision situation noted?

I, II and III.

I only.

II and III.

I and II.

II only.

III only.