1. Orginal cost of computer being considered for replacement. O A. Relevant OB. Irrelevant 2. Accumulated depreciation taken on old computer being considered for replacement. O A. Relevant OB. Irrelevant 3. Estimated annual operating costs of the new computer being considered for purchase. O A. Relevant O B. Irrelevant 4. Trade-in value received for old computer being considered for replacement. O A. Relevant OB. Irrelevant