Who supplies Quick Trip with gasoline?

QuikTrip Corporation operates and franchises its chain of convenience stores primarily in the Midwest, South, and Southeast states of the United States, with operations in Arizona, Georgia, Illinois, Iowa, Kansas, Kentucky, Louisiana, Maryland, Minnesota, Missouri, Nebraska, North Carolina, Ohio, Oklahoma, South Carolina, Tennessee, Texas, Virginia, and West Virginia. QT gas stations are supplied by a variety of gasoline suppliers, including BP, Shell, ExxonMobil, and Citgo.