What is the ground-state electron configuration for carbon (C)?

• A. $C^0:1s^{2}2s^{1}2p^3$
• B. $C^0:1s^{2}2s^{2}2p^2$
• C. $C^0:1s^{2}2s^{2}3p^2$
• D. $C^0:1s^{2}2s^{2}2p^4$

Answer: (B)