Find $f \circ g$ ​ $f ( x ) = x ^ { 2 } , g ( x ) = x - 2$

Multiple Choice

Find $f \circ g$ .​ $f ( x ) = x ^ { 2 } , g ( x ) = x - 2$ ​

A) $x ^ { 2 }$
B) $( x - 2 ) ^ { 2 }$
C) $( x + 2 ) ^ { 2 }$
D) $\left( x ^ { 2 } - 2 \right)$
E) $\left( x ^ { 2 } + 2 \right)$