Mango Inc. is going to issue a 25-year bond with a coupon rate of 3, 00% (with 2coupon payments per year) and a face value of $1000.Mango Inc.believes it can berated A by Standard and Poor's. HHowever, because of recent financial difficulties atthe company, Standard and Poor's is warning that it may downgrade Mango Inc.Industries bonds to BBB. Yields on A-rated, long-term bonds are currently 5,20%quoted as an annual percentage rate (APR)), and yields on BBB-rated bonds are8, 90% (quoted