Four cars are comparing their fuel efficiencies (miles per gallon). The Red Car states its efficiency. The Blue Car says, "My efficiency is 8 mpg higher than the Red Car's." The Green Car says, "My efficiency is 3 mpg lower than the Red Car's." The Yellow Car says, "My efficiency is 5 mpg higher than the Green Car's." List the efficiencies from lowest to highest for the Blue Car (B), the Green Car (G), and the Yellow Car (Y).