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?