The New York State Department of Financial Services found that Promontory was not sufficiently independent in its work for Standard Chartered (HKSE: 2888.HK - news ) , a London-based bank that helped clients evade U.S. sanctions against Iran and other countries.
Analyze the relationship between 'Standard Chartered' and 'Financial Services' within the context of the input sentence.
Options: platform, product/material produced, owner of, original broadcaster