Which of the Following Is NOT True of Benzene

Which of the following is NOT true of benzene?

A) Benzene tends to undergo substitution rather than addition reactions,even though it has a high index of hydrogen deficiency.
B) All of the hydrogen atoms of benzene are equivalent.
C) The carbon-carbon bonds of benzene are alternately short and long around the ring.
D) Only one o-dichlorobenzene has ever been found.
E) Benzene is more stable than the hypothetical compound 1,3,5-cyclohexatriene.