Categorize the compounds as being held together by hydrogen bonds, dipole-dipole interactions, or London dispersion forces.
a) H-bonds: A, Dipole-dipole: B, LDF: C
b) H-bonds: B, Dipole-dipole: C, LDF: A
c) H-bonds: C, Dipole-dipole: A, LDF: B
d) H-bonds: A, Dipole-dipole: C, LDF: B