Which Is the Correct Molecular Orbital Diagram for O₂^- ion

Multiple Choice

Which is the correct molecular orbital diagram for O₂^- ion?

A) σ 2s ↑ ↓ σ 2s* ↑ ↓ π2p ↑ ↓ σ2p ↑ ↓ π2p* ↑ ↓, ↑
B) σ 2s ↑ ↓ σ 2s* ↑ ↓ π2p ↑ ↓ σ2p ↑ ↓ π2p* ↑ ↑, ↑
C) σ 2s ↑ ↓ σ 2s* ↑ ↓ π2p ↑ ↓, ↑ ↓ σ2p ↑ π2p* ↑ ↓
D) σ 2s ↑ ↓ σ 2s* ↑ ↓ π2p ↑ ↓, ↑ ↓ σ2p ↑ ↓ π2p* ↑
E) σ 2s ↑ ↓ σ 2s* ↑ π2p ↑ ↓, ↑ ↓, ↑ ↓ σ2p ↑ ↓ π2p* ↑