Utilize the input text as a context reference, choose the right relationship between 'Goldman Sachs' and 'investment bank' from the options.
Options: business division, headquarters location, legal form, product/material produced

The strategy was revealed in a report from Wall Street Journal, of which Goldman Sachs CIO, R. Martin Chavez, explained that the investment bank is taking a page from Silicon Valley as they decided to apply an open approach.
product/material produced