Nonane and 2,3,4-trifluoropentane have almost identical molar masses, but nonane has a significantly higher boiling point. Which of the following statements best helps explain this observation?

a. The C−F bond is easier to break than the C−H bond.
b. The C−F bond is more polar than the C−H bond
c. The carbon chains are longer in nonane than the are in 2,3,4-trifluoropentane.
d. The carbon chains are farther apart in a sample of nonane than they are in
2,3,4-trifluoropentane.