During the fractional distillation of crude oil, different fractions are collected based on their boiling temperature ranges. Which of the following mixtures contains only the molecular formulae of hydrocarbons that are typically found within the gasoline (petrol) fraction?
C2H6\text{C}_2\text{H}_6C2H6, C7H16\text{C}_7\text{H}_{16}C7H16, C9H20\text{C}_9\text{H}_{20}C9H20
C6H14\text{C}_6\text{H}_{14}C6H14, C8H18\text{C}_8\text{H}_{18}C8H18, C10H22\text{C}_{10}\text{H}_{22}C10H22
C6H13OH\text{C}_6\text{H}_{13}\text{OH}C6H13OH, C8H18\text{C}_8\text{H}_{18}C8H18, C10H22\text{C}_{10}\text{H}_{22}C10H22
C7H16\text{C}_7\text{H}_{16}C7H16, C9H20\text{C}_9\text{H}_{20}C9H20, C20H42\text{C}_{20}\text{H}_{42}C20H42
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