In the context of the input sentence, determine the relationship between 'Mary Barra' and 'General Motors'.
Options: owner of, employer, product/material produced, location of formation

Reddit Email Print Reprint NEW YORK ( TheStreet ) --  General Motors ( GM - Get Report ) stock is up by 1.02% to $28.85 in mid-morning trading on Tuesday, after CEO Mary Barra said the company plans to increase technology features in its vehicles, Reuters reports.
employer