The Intermolecular Force(s)responsible for the Fact That CH₄ Has the Lowest

Multiple Choice

The intermolecular force(s) responsible for the fact that CH₄ has the lowest boiling point in the set CH₄,CH₃CH₃,CH₃CH₂CH₃,CH₃CH₂CH₂CH₃ is/are ________.

A) hydrogen bonding
B) London dispersion forces
C) mainly hydrogen bonding but also dipole-dipole interactions
D) dipole-dipole interactions
E) mainly London-dispersion forces but also dipole-dipole interactions