Formation of Two Moles of Hydrogen Chloride Gas from the Gases

Multiple Choice

Formation of two moles of hydrogen chloride gas from the gases hydrogen and chlorine is a reaction for which ΔH is -185 kJ.Which of the following statements is correct?
i.The reaction is exothermic.
ii.Enthalpy of the system decreases.
iii.Heat is a "product".

A) All are correct
B) All are incorrect
C) i only
D) ii only
E) iii only