In 2009, a year after the collapse of investment bank Lehman Brothers and with the economy already in the depths of an historic, deep recession, economists were predicting the Fed would hike rates as early as the first quarter of 2010.
Refer to the input text as context and select the correct relationship between 'Lehman Brothers' and 'investment bank' from the available options.
Options: employer, product/material produced, brand, member of