According to Molecular Orbital Theory, Two Separate 1s Orbitals Interact $\sigma$

Multiple Choice

According to Molecular Orbital Theory, two separate 1s orbitals interact to form what molecular orbital(s)

A) ( $\sigma$ ) only
B) ( $\sigma$ ) and $\sigma$ *
C) ( $\pi$ ) only
D) ( $\pi$ ) and $\pi$ *
E) ( $\sigma$ ) and $\pi$