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.
Take context from the input text and decide on the accurate relationship between 'Mobil' and 'gasoline' from the options provided.
Options: distributed by, manufacturer, stock exchange, product/material produced