Which of the Following Statements About the Cope Rearrangement Is $\pi$

Which of the following statements about the Cope rearrangement is not true?

A) The Cope rearrangement involves the rearrangement of a 1,5-diene to an isomeric 1,5-diene.
B) The Cope rearrangement takes place readily in a suprafacial pathway under photochemical conditions.
C) The Cope rearrangement involves three electron pairs; two in $\pi$ bonds and one in a $\sigma$ bond.
D) The Cope rearrangement takes place readily in a suprafacial pathway, when heated.