Find $g \circ f.$ F (X) = X + 4 G (X) = X2

Multiple Choice

Find $g \circ f.$ f (x) = x + 4 g (x) = x2

A) $( f \circ g ) ( x ) =$ x2 + 4
B) $( f \circ g ) ( x ) =$ x2 - 16
C) $( f \circ g ) ( x ) =$ x2 + 16
D) $( f \circ g ) ( x ) =$ x2 + 4x + 16
E) $( f \circ g ) ( x ) =$ x2 + 8x + 16