You are an intern with Ford Motor Company in its corporate finance division. The firm is planning to issue $50 million of 12% annual coupon bonds with a 10-year maturity. The firm anticipates an increase in its bond rating. Your boss wants you to determine the gain in the proceeds of the new issue if it is rated above the firm's current bond rating. To prepare this information, you will have to determine Ford's current debt rating and the yield curve for its particular rating