Take context from the input text and decide on the accurate relationship between 'Citigroup' and 'Insurance' from the options provided.
Options: stock exchange, product/material produced, platform, founded by

Morgan Stanley, Citigroup Inc. and Goldman Sachs Group Inc. aren’t issuing new shares of their ETNs, which count as short-term debt because holders can typically redeem them on about a week’s notice, according to “living wills” submitted to the Federal Deposit Insurance Corp. and the Federal Reserve last month, details of which were released Monday.
product/material produced