A $1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}$
B $1s^{2}2s^{2}2p^{4}3s^{4}3p^{5}$
C $1s^{2}2s^{2}2p^{5}3s^{3}3p^{5}$
D $1s^{2}2s^{2}2p^{5}3s^{4}3p^{4}$
Correct Answer: Option A
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