During the year just​ ended, Shering​ Distributors, Inc., had pretax earnings from operations of . In​ addition, during the year it received in income from interest on bonds it held in Zig Manufacturing and received in income from dividends on its common stock holding in Tank​ Industries, Inc. Shering is in the tax bracket and is eligible for a dividend exclusion on its Tank Industries stock. a. Calculate the​ firm's tax on its operating earnings only. b. Find the tax and the​ after-tax amount attributable to the interest income from Zig Manufacturing bonds. c. Find the tax and the​ after-tax amount attributable to the dividend income from the Tank​ Industries, Inc., common stock. d.​ Compare, contrast, and discuss the​ after-tax amounts resulting from the interest income and dividend income calculated in parts b. and c. e. What is the​ firm's total tax liability for the​ year?