Which of the following is the correct electronic configuration for Cobalt-27 (Co)?
A. 1s² 2s² 2p² 3s² 3p² 4s² 3d²
B. 1s¹ 2s² 2p⁶ 3s² 3p⁶ 4s² 3d²
C. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷
D. 1s¹ 2s² 2p⁷ 3s² 3p⁶ 4s² 3d⁶