8. Rank each of the following compounds in order of increasing heat of hydrogenation. 1,2-hexadiene 
A, 2-hexyne B, trans-1,4-hexadiene C, 1,5-hexadiene D, and trans-2,4-hexadiene E.
(A)E<C<D<B<A
(B)E<D<C<B<A
(C)E<B<C<D<A
(D)C<B<E<A<D
(E) D<B<E<A<C 

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統計: A(1), B(1), C(0), D(0), E(1) #2823972