Keeping in mind the enthalpy of formation of HF and HCl i.e. -161 kJ and -92 kJ, respectively, which of the following statements do you think is incorrect?

Question

(a) The affinity of fluorine to hydrogen is greater than the affinity of chlorine to hydrogen.
(b) HF is more stable than HCl
(c) HCl is more stable than HF
(d) HF and HCl are endothermic compounds.