Analyze the relationship between 'MBIA' and 'Finance' within the context of the input sentence.
Options: location of formation, business division, manufacturer, industry

PREPA said on Wednesday it agreed to an extension of the forbearance agreements through Sept. 18, 2015 with all creditors except National Public Finance Guarantee Corporation, a unit of MBIA Assured Guaranty was also party to the forbearance deal.
industry