Please use the KMV Model(Moody's Prop Model) to rate Boeing's(BA) credit. Why is this the model to utilize? Thank you for the help! Please show all formulas used. I attached an example of what is used for another company's calculation.

November 20XX $7.9 February 20XX $7.3 Market capitalization (price x shares outstanding) Book liabilities Market value of assets Asset volatility Default point Default distance $4.7 $12.6 15% $3.4 12.6 - 3.4 -= 4.9 0.15 x12.6 0.06%(6 bp) = AA- $4.9 $12.2 17% $3.5 12.2 - 3.5 -= 4.2 0.17 x 12.2 0.11%(11 bp) = A' EDF November 20XX $7.9 February 20XX $7.3 Market capitalization (price x shares outstanding) Book liabilities Market value of assets Asset volatility Default point Default distance $4.7 $12.6 15% $3.4 12.6 - 3.4 -= 4.9 0.15 x12.6 0.06%(6 bp) = AA- $4.9 $12.2 17% $3.5 12.2 - 3.5 -= 4.2 0.17 x 12.2 0.11%(11 bp) = A' EDF