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If \( \Delta \mathrm{H}_{\mathrm{f}\left(\mathrm{C}_{2} \mathrm{H}_{6}\right)}^{\mathrm{o}}(\mathrm{g})=-85 \mathrm{~kJ} \mathrm{~mol}^{-1}, \Delta \mathrm{H}_{\mathrm{f}\left(\mathrm{C}_{3} \mathrm{H}_{8}\right)}^{\mathrm{o}}(\mathrm{g})=-104 \mathrm{~kJ} \) \( \mathrm{mol}^{-1}, \Delta \mathrm{H}^{\circ} \) for \( \mathrm{C}(\mathrm{s}) \rightarrow \mathrm{C}(\mathrm{g}) \) is \( 718 \mathrm{~kJ} \mathrm{~mol}^{-1} \) and heat of formation of \( \mathrm{H} \)-atom is \( 218 \mathrm{~kJ} \mathrm{~mol}^{-1} \), then:
(a) \( \Delta \mathrm{H}_{\mathrm{C}-\mathrm{C}}=345 \mathrm{~kJ} \)
(b) \( \Delta \mathrm{H}_{\mathrm{C}-\mathrm{H}}=414 \mathrm{~kJ} \)
(c) \( \Delta \mathrm{H}_{\mathrm{H}-\mathrm{H}}=436 \mathrm{~kJ} \)
(d) \( \Delta \mathrm{H}_{\mathrm{H}-\mathrm{H}}=218 \mathrm{~kJ} \)
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