Crude oil is a naturally occurring mixture of hydrocarbons.
Crude oil is separated into useful fractions.
Which of these mixtures of substances could be in a fraction from crude oil?
C5H12O\text{C}_5\text{H}_{12}\text{O}C5H12O, C6H14\text{C}_6\text{H}_{14}C6H14, C7H16\text{C}_7\text{H}_{16}C7H16
C5H12\text{C}_5\text{H}_{12}C5H12, C6H13Cl\text{C}_6\text{H}_{13}\text{Cl}C6H13Cl, C7H16\text{C}_7\text{H}_{16}C7H16
C5H12\text{C}_5\text{H}_{12}C5H12, C6H14\text{C}_6\text{H}_{14}C6H14, C7H16\text{C}_7\text{H}_{16}C7H16
C5H12O\text{C}_5\text{H}_{12}\text{O}C5H12O, C6H13Cl\text{C}_6\text{H}_{13}\text{Cl}C6H13Cl, C7H16\text{C}_7\text{H}_{16}C7H16