Comments on this result (WACC and PTWACC) and Discuss what factors would lead to this unstable WACC and pre tax WACC result happen, imagine the company is FACEBOOK. (100 - 200 words)

iTax Rate Equity Firm Value Pre Tax Weighted average cost of capital Weighted average cost og_capital 2019 26.60% 100000 100400 20% _20% 2018 13.91% 83000 83027 -4% -4% 2017 13% 73000 73000 24% 24% 2016 19% 58000 58000 17% 17% 2015 42% 43000 43023 -3% -3% 20141 41% 35000! 354511 12% 12%! iTax Rate Equity Firm Value Pre Tax Weighted average cost of capital Weighted average cost og_capital 2019 26.60% 100000 100400 20% _20% 2018 13.91% 83000 83027 -4% -4% 2017 13% 73000 73000 24% 24% 2016 19% 58000 58000 17% 17% 2015 42% 43000 43023 -3% -3% 20141 41% 35000! 354511 12% 12%