Why is the normal boiling point of hydrogen fluoride is so much higher than that of hydrogen chloride, the hydride of the next element in group VIIA?

A the electron cloud in the HF molecule is more easily polarized than that in HCl

B HCl molecules are non-polar

C the HF molecules have a lower dipole moment

D chlorine in HCl is more electronegative that fluorine in HF

E the HF molecules undergoes a higher degree of hydrogen bonding than HCl