Presented below is information related to viel company at december 31, 2020, the end of its first year of operations. sales revenue $310,000 cost of goods sold 140,000 selling and administrative expenses 50,000 gain on sale of plant assets 30,000 unrealized gain on available-for-sale debt investments 10,000 interest expense 6,000 loss on discontinued operations 12,000 dividends declared and paid 5,000 compute the following: (a) income from operations(b) net income(c) comprehensive income(d) retained earnings balance at december 31, 2017. (ignore income tax effects.)