Question

A gasoline fraction from the fractional distillation of petroleum includes compounds with the

formulas C₆H₁₄ and C₁₂H₂₆.
Which statements about these compounds are correct?
       1. C₁₂H₂₆ has a higher boiling point than C₆H₁₄ .
       2. C₁₂H₂₆ has a lower relative molecular mass than C₆H₁₄ .
       3. C₆H₁₄ and C₁₂H₂₆ are members of different homologous series.
       4. C₆H₁₄ and C₁₂H₂₆ both undergo complete combustion to form carbon dioxide and water.

(A) 1 and 3               (B) 1 and 4             (C) 2 and 3                    (D) 2 and 4