OLDWICK, N.J.--(BUSINESS WIRE)--A.M. Best has assigned a debt rating of “bbb” to the $1.5 billion 5.25% fixed-to-floating rate non-cumulative preferred stock, Series C recently issued by MetLife, Inc. (MetLife) (New York, NY) [NYSE:MET]. The outlook assigned to the rating is stable. Proceeds from the sale of the Series C preferred shares will be utilized primarily to fund the full purchase of MetLife’s existing 6.50% non-cumulative Series B preferred shares. The Series C preferred shares rank e