The following is a partial year-end adjusted trial balance. Debits Credits $490,000 $ 60,000 8,000 Account Title Sales revenue Loss on sale of investments Interest revenue Cost of goods sold General and administrative expense Restructuring costs Selling expense Income tax expense 255,000 59,000 59,500 34,500 ? Income tax expense has not yet been recorded. The income tax rate is 25%. a. Determine the operating income (loss). b. Determine the income (loss) before income taxes. c. Determine the net income (loss). a Operating income (loss) b. Income (loss) before income taxes Net income (loss) C