In the context of the input sentence, determine the relationship between 'Citigroup' and 'New York City'.
Options: location of formation, subsidiary, manufacturer, founded by

Citigroup Inc. (“ Citigroup ”) announced today the aggregate principal amounts of the notes set forth in the first table below (the “ Any and All Notes ”) and the second table below (the “ Maximum Tender Notes ”) that were validly tendered and not validly withdrawn prior to 5:00 p.m., New York City time, on August 7, 2015 (the “ Early Tender Date ”) pursuant to its previously announced cash tender offers (each, an “ Offer ” and, collectively, the “ Offers ”) (the Any and All Notes and the Maximum Tender Notes, collectively, the “ Notes ” and each a “ series ” of Notes).
location of formation