This year, Sigma Inc. generated $662,250 income from its routine business operations. In addition, the corporation sold the following assets, all of which were held for more than 12 months: Initial Acc. Sale Basis Depr. Price $ 149,600 $ @ $ 75,000 103,600 82,880 41,750 Marketable securities Production equipment Business realty: Land Building 237,800 270,000 @ 81,000 247,250 210,500 *Through date of sale Required: a. Compute Sigma's taxable income assuming that it used the straight-line method to calculate depreciation on the building and has no nonrecaptured Section 1231 losses. b. Recompute taxable income assuming that Sigma sold the securities for $159,200 rather than $75,000