A Gasoline's Octane Rating Is Determined by

A gasoline's octane rating is determined by

A) comparing its burning properties to those of pure isooctane,which has an octane rating of 100.
B) comparing its burning properties to those of natural gas,which produces far fewer pollutants than gasoline normally does.
C) comparing the deposits left on the engine cylinders by burning gasoline to the deposits left by burning diesel fuel.
D) comparing the acceleration of a vehicle when burning gasoline to its acceleration when burning pure ethanol.