need all A-D! this is tax accounting!

Firm OCS sold business equipment with a $21,000 initial cost basis and $8,215 accumulated tax depreciation. In each of the following cases, compute OCS's recaptured ordinary income and Section 1231 gain or loss on the sale. Required: a. Amount realized was $10,200. b. Amount realized was $13,200. c. Amount realized was $17,700. d. Amount realized was $23,700. Note: For all requirements, losses should be indicated with a minus sign. Leave no cell blank. Enter " 0 " for cells that do not have an amount