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

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

A) (_{σ 2s} ↑ _{↓ σ 2s}^* ↑ ↓ σ_2p ↑ ↓ π_2p ↑ ↓ π_2p^* ↑ ↓,↑)
B) (_{σ 2s} ↑ _{↓ σ 2s}^* ↑ ↓ σ_2p ↑ ↓ π_2p ↑ ↓,↑ ↓ π_2p^* ↑ ↑,↑)
C) (_{σ 2s} ↑ _{↓ σ 2s}^* ↑ ↓ σ_2p ↑ π_2p ↑ ↓,↑ ↓ π_2p^* ↑ ↓)
D) (_{σ 2s} ↑ _{↓ σ 2ss}^* ↑ ↓ σ_2p ↑ ↓ π_2p ↑ ↓,↑ ↓ π_2p^* ↑) )
E) (_{σ 2s} ↑ _{↓ σ 2ss}^* ↑ σ_2p ↑ ↓ π_2p ↑ ↓,↑ ↓,↑ ↓ π_2p^* ↑)