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

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