Nitric acid was first prepared by heating sodium nitrate with sulfuric acid and collecting the vapors produced. Calculate?

Nitric acid was first prepared by heating sodium nitrate with sulfuric acid and collecting the vapors produced. Calculate ΔH°rxn for that reaction given this information.
ΔH°f [NaNO3(s)] = -467.8 kJ/mol;
ΔH°f [NaHSO4(s)] = -1125.5 kJ/mol;
ΔH°f [H2SO4(l) = -814.0 kJ/mol;
ΔH°f [HNO3(g)] = -135.1 kJ/mol.
NaNO3(s) + H2SO4(l) → NaHSO4(s) + HNO3(g)
a.
-644.2 kJ
b.
-291.4 kJ
c.
-21.2 kJ
d.
21.2 kJ
e.
644.2 kJ