A fractionating column is used to separate the hydrocarbon fractions in petroleum by fractional distillation. Which row describes the properties of the fractions that condense near the top of the fractionating column?
- Asize of molecule: large; boiling point: high
- Bsize of molecule: large; boiling point: low
- Csize of molecule: small; boiling point: high
- Dsize of molecule: small; boiling point: low