The compound below reacts extremely vigorously with dienophiles to generate Diels Alder adducts. Only two of the four double bonds behave in this way, the other two do not show unusually high reactivity. Why?
A. Because the compound is antiaromatic before it reacts
B. Because significant steric strain is relieved
C. Because an aromatic product can be formed
D. Because significant ring strain is relieved
E. Because this compound is highly conjugated