It's September $2020$ and you are trying to estimate the cost of debt for a $10$ year project at Boeing. Boing is currently rated BBB by S&P and you have collected the

following information on its bonds. Given this information, what is the best estimate for the cost of debt for this project?

I. $2\mathrm{.}35\%$

II$.2\mathrm{.}45\%$

III. $5\mathrm{.}65\%$

IV$.3\mathrm{.}5\%$

v$.0\mathrm{.}7$

VI$.3\mathrm{.}1\%$