Take context from the input text and decide on the accurate relationship between 'Goldman Sachs' and 'investment bank' from the options provided.
Options: business division, product/material produced, legal form, headquarters location

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