Refer to the input text as context and select the correct relationship between 'Goldman Sachs' and 'Investment bank' from the available options.
Options: product/material produced, developer, currency, subsidiary

Investment bank Goldman Sachs (NYSE: GS-PB - news ) estimates the Chinese government has spent 1.5 trillion yuan ($234 billion) to support its stock market over the last three months, Bloomberg News reported.
product/material produced