The Atomic Number of Boron Is 5 $1 s ^ { 2 } 2 s 3$

The atomic number of boron is 5. The correct electronic configuration of boron is ________.

A) $1 s ^ { 2 } 2 s 3$
B) $1 s ^ { 2 } 2 p 3$
C) $1 s ^ { 2 } 2 s^22 p^1$
D) $2 s ^ { 2 } 2 p 3$
E) $1 s ^ { 2 } 2 s^23 s^1$