you believe that you can earn 2% more gross return per year on your portfolio relative to passive indexing, if you engage in serious stock research. However, the additional trading costs and tax liability from active management will cost you about0.5% of assets. you have an $800,000 stock portfolio. What is the most you can afford to spend on your research per year, before you're better off sticking with indexing?

A. 4000

B. 8000

C. 12000

D. 16000

E. 20000