Which of the Following Statements About A $\pi$ -Bonding Molecular Orbital Is True?
A) A

Which of the following statements about a $\pi$ -bonding molecular orbital is true?

A) A $\pi$ -bonding molecular orbital is formed when two p orbitals of similar phase overlap.
B) A $\pi$ -bonding molecular orbital is lower in energy than a $\sigma$ -bonding molecular orbital.
C) A $\pi$ -bonding molecular orbital is formed when two p orbitals of opposite phase overlap.
D) Both the statements "a $\pi$ -bonding molecular orbital is formed when two p orbitals of similar phase overlap" and a $\pi$ -bonding molecular orbital is lower in energy than a $\sigma$ -bonding molecular orbital" are true.