NEW YORK--(BUSINESS WIRE)--Fitch Ratings assigns the following ratings to the puttable floating rate receipts (floater receipts) and inverse floating rate receipts (residual receipts) of the Tender Option Bond Trust series listed below: --Floater receipts, series 2015-ZF0252 'AA-/F1+', Stable Outlook; --Residual receipts, series 2015-ZF0252'AA-', Stable Outlook. KEY RATING DRIVERS The long-term 'AA-', Stable Outlook ratings assigned to the series 2015-ZF0252 floater receipts and series 2015-ZF0