Heats of hydrogenation data would be useful in comparing the relative stabilities of which of the following substances?

Question

Quizplus · Accepted Answer

Heats of hydrogenation data would be useful in comparing the relative stabilities of substances with differing degrees of unsaturation. 
I and II both have one double bond and thus could be compared using heats of hydrogenation data. 
V is an alkene and could also be compared through heats of hydrogenation data. 
III has no double bonds and thus would not be useful to compare using heats of hydrogenation data. 
IV is an aromatic compound and would require a different method for comparison.

Heats of Hydrogenation Data Would Be Useful in Comparing the Relative