Which of the following statements about π molecular orbitals is/are correct?

A) π molecular orbitals are cylindrically symmetric.
B) Most of the electron density in a π molecular orbital is centered above and below the internuclear axis.
C) When two atoms are connected by a double bond, both of these bonds are π bonds.
D) Both statements B and C are correct.
E) Statements A, B, and C are all correct.

π Molecular Orbitals

Orbitals formed by the overlap of p orbitals on adjacent atoms, significant in determining the bonding and properties of molecules.

Electron Density

Refers to the probability distribution of electrons in a chemical species; higher density regions indicate a greater likelihood of electron presence.

Internuclear Axis

The imaginary line that runs through the nuclei of two atoms bonded together, defining the direction of the bond.