For which one of the following equations is ΔH⁰react equal to ΔH°f

For which one of the following equations is ΔH⁰react equal to ΔH°f for the product

(a) N₂(g) + O₃(g) → N₂O₃(g)
(b) CH₄(g) + 2Cl₂(g) → CH₂Cl₂(l) + 2HCl(g)
(c) Xe(g) + 2F₂(g) → XeF₄(g)
(d) 2CO(g) + O₂(g) → 2CO₂(g)

Xe(g) + 2F₂(g) → XeF₄(g)

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