Utilize the input text as a context reference, choose the right relationship between 'Sergio Marchionne' and 'Fiat' from the options.
Options: employer, product/material produced, original broadcaster, industry

General Motors shares rose 3 per cent to $29.71 after Fiat Chrysler chief executive Sergio Marchionne said over the weekend that a tie-up with GM remained a “high priority”.
employer