Standard&Poor's Ratings Services affirmed its 'AA+/A-1' rating on Merrill Lynch Puttable FLOATs/RITES Trust, puttable floating option tax-exempt receipts, series PT-4245, relating to Minnesota Housing Finance Agency residential housing finance bonds, 2007 series A-1, 2006 series B, and 2006 series C-1. The long-term component of the rating is based on 'AA+' rated underlying bonds. The short-term component of the rating is based on the rating on the liquidity provider, Wells Fargo&Co. Inc. (A-1) with an expiration date of Oct. 15, 2012. USPF Criteria: Secondary Market Derivative Products, June 27, 2007
