Use the information for the question(s) below. Luther Industries needs to raise $25 million to fund a new office complex. The company plans on issuing ten-year bonds with a face value of $1,000 and a coupon rate of 7.0% (annual payments). The following table summarizes the YTM for similar ten-year corporate bonds of various credit ratings: Rating YTM AAAAAABBBBB 6.70% 6.80% 7.00% 7.40% 8.00% What rating must Luther receive on these bonds if they want the bonds to be issued at par? O A. BBB OB. AA OC. A ODB