Which of the Following Statements About Thermal Electrocyclic Reactions Isnot

Which of the following statements about thermal electrocyclic reactions isnot true?

A) The number ofs bonds in the conjugated polyene determines whether rotation is conrotatory or disrotatory.
B) In thermal reactions, we consider the orbitals of the HOMO of the ground state electronic configuration to determine the course of the reaction.
C) Thermal electrocyclic reactions occur in a conrotatory fashion for a conjugated polyene with an even number ofp bonds.
D) Thermal electrocyclic reactions occur in a disrotatory fashion for a conjugated polyene with an odd number ofp bonds.