Concerning the Relative Stabilities of Alkenes,which Is a False Statement

Multiple Choice

Concerning the relative stabilities of alkenes,which is a false statement?

A) Unless hydrogenation of the alkenes gives the same alkane,heats of hydrogenation cannot be used to measure their relative stabilities.
B) In general,the greater the number of alkyl groups attached to the carbon atoms of the double bond,the greater the stability of the alkene.
C) The greater the quantity of heat liberated on combustion or hydrogenation of an alkene,the greater its energy content.
D) trans-Cycloalkenes are always more stable than the cis-isomers.
E) Heats of combustion can be used to measure the relative stabilities of isomeric alkenes,even though their hydrogenation products are not identical.