Answer: C. Corporation a's net income will increase will increase to the tax deductibility of interest expense
Step-by-step explanation
Corporation a borrowed $ 1000 000 to buy back common stock. The interest payments of 60 000 (1000 000 x 0.06) will be claimed as a tax deduction that is interest expense is a tax deductible expense. When interest payments are deducted the taxable income amount will decrease by $60 000 which will result in the company paying lower income tax. Paying lower income tax will increase the net income or earnings after tax