Bismarck and Altoona exchange buildings. The transaction has commercial substance. The following information was obtained. Cost Accumulated Depreciation Fair value based upon appraisal ed Depreciation aisa Bismarck's Building $60,000 20,000 20.000 Altoona's Building $45,000 20,000 40,000 20.000 The exchange was made, and based on the difference in appraised value, Altoona paid $10,000 to Bismarck. Bismarck should recognize a gain on this exchange of: Select one: a. $0 O b. $10,000 c. $8,000 O d. $2,000 O e. $12,000