OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has placed under review with negative implications the Financial Strength Rating (FSR) of A (Excellent) and the Long-Term Issuer Credit Rating of “a+” of National Farmers Union Property and Casualty Company (NFU P&C) (Sun Prairie, WI). These Credit Ratings (ratings) have been placed under review with negative implications following the announcement by QBE Insurance Group Limited (QBE) (Australia) that it has entered an agreement to sell NFU P&C