In the context of the input sentence, determine the relationship between 'Exxon' and 'gasoline'.
Options: member of, product/material produced, position held, chief executive officer

Low production at a single Exxon Mobil refinery in Southern California is keeping gasoline prices higher than they are in many other parts of the United States, where a domestic oil boom has driven prices lower over the last year, according to an article in the Los Angeles Times.
product/material produced