Which Is the Correct Molecular Orbital Diagram for Carbon Monoxide

Multiple Choice

Which is the correct molecular orbital diagram for carbon monoxide?

A) σ 2s ↑ ↓ σ 2s* ↑ ↓ π2p ↑ ↓, ↑ ↓ σ2p ↑ ↓
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 ↑ ↓, ↑ ↓ π2p* ↑ ↓