NEW YORK (Standard&Poor's) Dec. 7, 2012--Standard&Poor's Ratings Services assigned its 'AA' long-term rating, and stable outlook to New York City's series 2013D and 2013E general obligation (GO) bonds. At the same time, Standard&Poor's affirmed its 'AA' rating on the related parity debt outstanding. The outlook is stable. "Credit factors supporting the GO rating include what we view as New York City's substantial and diverse economic base, and its comprehensive financial planning process, which has helped it effectively balance forecast revenue declines and ongoing spending pressures, "said Standard&Poor's credit analyst Robin Prunty. "The rating also reflects what we consider New York City's prudent use of surplus revenues that have enabled it to prepay