You are dociding betwoen two mutualiy exedusive investment opportunitios. Both require the same initial invostment of $10 millon. Investment A will generabe $2.5 misision per year (starting at the nnd of the first year) in perpetuity. Imestment B will generate $2.1 milion at the end of the first year, and its revenues wil grow at 3.9 per year for every year after that, Use the incrementat IRR rut to correctly choose between investments A and B when the cost of capital is 7.2%. At what cost of capizal would your dectiven change? The incremental IRR is - (Round to two decimai places.)